Wednesday, January 31, 2018

Social Welfare Schemes 1

സെക്രട്ടറിയേറ്റ് അസിസ്റ്റൻറ് പോലുള്ള ഡിഗ്രി ലെവൽ പരീക്ഷകളിൽ പത്ത് മാർക്കിനുള്ള ചോദ്യങ്ങൾ സാമൂഹ്യക്ഷേമ പദ്ധതികളിൽ നിന്നും ചോദിക്കാറുണ്ട്. നന്നായി പഠിച്ചുകഴിഞ്ഞാൽ പോലും പരീക്ഷാ ഹാളിൽ കൺഫ്യൂഷൻ ഉളവാക്കാൻ പോന്നവയാണ് ഈ ഭാഗത്തെ ചോദ്യങ്ങൾ. ഇപ്പോളും പുതിയ പുതിയ പദ്ധതികൾക്ക് കേന്ദ്ര-സംസ്ഥാന സർക്കാരുകൾ രൂപം കൊടുക്കുന്നതിനാൽ ആനുകാലികവുമായും ഈ ഭാഗം ബന്ധപ്പെട്ടിരിക്കുന്നു. സാമൂഹ്യക്ഷേമ പദ്ധതികളുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങൾ ആണ് നമുക്ക് തുടർന്ന് PSC ക്ലാസ്സ്മുറിയിൽ പഠിക്കാനുള്ളത്

 അന്ത്യോദയ അന്ന യോജന, ബാലിക സമൃദ്ധി യോജന, ഭാരത് നിർമ്മാൺ, ഇന്ദിര ആവാസ് യോജന എന്നീ പദ്ധതികളാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾപ്പെടുത്തിയിട്ടുള്ളത് 


  • Prime Minister who started Anthyodaya Anna Yojana (AAY)
                 AB Vajpayee
  • Anthyodaya Anna Yojana (AAY) was started on
                 25th December 2000
  • Anthyodaya Anna Yojana (AAY) was started at
                 Rajasthan
  • Anthyodaya Anna Yojana was concerned for
                 Poorest of poor among BPL families
  • Scheme started to provide rice and wheat at low rate through public distribution system
                 Anthyodaya Anna Yojana
  • Anthyodaya Anna Yojana was implemented by
                 Food and civil supplies department
  • AAY was started during the period of 
                 9th five year plan
  • Food grains allocated through AAY
                 35 Kg of rice and wheat with 3Rs/Kg rice and 2Rs/Kg wheat
  • Anthyodaya list in rural areas are approved by
                 Department of rural development
  • Anthyodaya list in urban areas are approved by
                 Department of urban development
  • Color of Anthyodaya ration card
                 Yellow
  • Identification of Anthyodaya families and issuing ration cards is the responsibilities of 
                 State government
  • Prime Minister who started Balika Samridhi Yojana (BSY)
                 IK Gujral
  • BSY started on 
                 15th August 1997
  • Five year plan during which BSY introduced 
                 9th Five year plan
  • Grant amount for girl children under BSY
                 Rs. 500
  • Beneficiaries of BSY
                 2 girl children in each household born on or after 15/8/1997
  • Eligibility criteria for BSY
                 Girl children belongs to BPL, SC\ST family
  • BSY implemented through
                 ICDS infrastructure in rural areas and functionaries of Health department in Urban areas
  • Objectives of BSY are
                 To change the negative attitude towards girl children, To improve enrollment and retention of girl children in school, To raise the age of marriage of girls, To assist the girl to undertake income generating activities
  • Insurance policy for girls associated with BSY
                 Bhagya Shri Balika Kalyan Bima Yojana
  • Prime Minister who started Bharat Nirman
                 Manmohan Singh
  • Bharat Nirman started on 
                 16th December 2005
  • Five year plan during which Bharat Nirman introduced 
                 10th Five year plan
  • Main objective of Bharat Nirman
                 Building infrastructure and bringing basic amenities to Rural India
  • Aims of Bharat Nirman are
                 To provide safe drinking water to all under developed areas in India by 2012, To develop housing facilities for the poor, Provide electricity to every village, To provide additional 1 crore hecters of irrigational useful land by 2012, To cover 40% of rural areas with telecommunication by 2014, Provide broadband coverage to all Panchayath by the year 2012, Construct all weather roads by 2012 to connect all villages of India having a minimum population of 500
  • Six parts included in Bharat Nirman
                 Water (National Rural Drinking Water Program), Roads (Pradhan Mantri Gram Sadak Yojana), Housing (Indira Awas Yojana), Telephone, Electricity (Rajiv Gandhi Grameen Vidyutikaran Yojana), Irrigation
  • Prime Minister who started Indira Awas Yojana (IAY)
                 Rajiv Gandhi
  • IAY started on 
                 22 May 1985
  • Five year plan during which IAY introduced 
                 7th Five year plan
  • Amount granted under IAY for repairing house
                 Rs. 15000
  • IAY was launched as a sub-scheme of 
                 RLEGP (Rural Landless Employment Guarantee Program)
  • IAY merged to Jawahar Rozgar Yojana in 
                 1989
  • Which department has the responsibility of IAY 
                 Ministry of Rural Development
  • Objective of IAY 
                 Construction of houses free of cost to SC/ST and poor below poverty line
  • IAY is related to the construction of
                 Rural Housing
  • IAY houses are allotted in the name of
                 Woman of the family or jointly between husband and wife
  • IAY houses shall not be alienated for a period of
                 15 Years
  • Software launched in 2010 to assist improved administration of IAY
                 Awaas Soft
  • Amount of financial assistance given under IAY
                 70,000 in plain areas and 75,000 in high land areas
  • Main sponsor of IAY is
                 Central Government
  • IAY changed to an independent scheme on 
                 1st January 1996
  • Necessary conditions to built houses in IAY
                 Sanitary Latrine, Smokeless kitchen, No involvement of contractors
  • To integrate the provision of shelter with sanitation and drinking water, IAY enlarged in 1999-2000 as
                 Samagra Awas Yojana (SAY)
  • New name of IAY
                 National Gramin Awaas Mission
  • Extended beneficiaries of IAY
                 Non-SC/ST Categories, widows or next kin of defence personnel killed in action. Ex-service men and retired members of the para military forces
  • Top up loan eligible for IAY beneficiaries
                 20,000/-
                                                                                                       (To be Continued...)

Tuesday, January 30, 2018

Biology 5

ഹോർമോണുകളും ഗ്രന്ഥികളുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾപ്പെടുത്തിയിരിക്കുന്നത്
  • Study of origin of human
                Anthrapogenesis
  • Scientific name of man
                Homo sapiens
  • Genus to which man belongs
                Homo
  • Species to which man belongs
                Sapiens
  • Study of glands and hormones of the body
                Endocrinology
  • Glands which produces their secretions through particular ducts
                Ducted glands
  • Examples of ducted glands
                Lachrymal glands, salivary glands, liver and sweat glands
  • Glands which leaves secretions directly into the blood system
                Ductless glands
  • Examples of ductless glands
                Endocrine glands
  • Non nutrient chemical messengers of the body
                Hormones
  • The term hormone was first coined by
                EH Starling
  • First discovered hormone
                Secretin
  • Largest gland in human body
                Liver
  • Largest endocrine gland in human body
                Thyroid gland
  • Only one heterocrine gland (which acts as both endocrine and exocrine) in human body 
                Pancreas
  • Part of brain that controls secretion of pituitary hormones
                Hypothalamus
  • Only one neurocrine gland in human body
                Hypothalamus
  • Hormones produced by Hypothalamus
                Oxytocin, Vasopressin
  • Hormone which is called as ADH (Anti Diuretic Hormone)
                Vasopressin
  • Water balance in the body is mainly controlled by
                ADH
  • Hormone which helps in the contraction of uterus during parturition
                Oxytocin
  • Condition of excessive thirst and the excretion of excess urine due to the insufficient Vasopressin in the body is known as
                Diabetes insipidus
  • Gland which is known as master gland
                Pituitary gland
  • Hormones produced by Pituitary glands
                Somatotrophic hormone
  • Hormone which is called as growth hormone
                Somatotrophic hormone
  • Glands which controls other glands
                Pituitary glands
  • Milk secreting hormones produced by Pituitary glands
                Prolactin
  • Outer part of adrenal gland is known as 
                Adrenal cortex
  • Inner part of adrenal gland is known as 
                Adrenal medulla
  • Adrenal glands situated over
                Kidney
  • Adrenal medulla producing hormones
                Adrenaline and nor-adrenaline
  • Hormones called as emergency hormones or hormones of flight\fight
                Adrenaline and nor-adrenaline
  • Hormones which increasing the heart beat and blood pressure
                Adrenaline and nor-adrenaline
  • Hormone which is called as Surgical hormone
                Nor-adrenaline
  • Hormone which is injecting after surgery to control the blood pressure
                Nor-adrenaline
  • Group of hormones produced by Adrenal cortex is commonly called
                Corticoids
  • Salt retaining hormone in human body
                Aldosterone
  • Gland which is called as 3F and 4S gland
                Adrenal gland
  • Sex hormones are produced by
                Adrenal cortex
  • Largest endocrine gland in human body
                Thyroid gland
  • Hormones produced by thyroid glands
                Thyroxine and calcitonin
  • Mineral present in Thyroxine which is essential for the metabolism
                Iodine
  • Mineral which is required for the healthy functioning of thyroid gland
                Iodine
  • Major function of thyroid gland is to 
                Control growth and metamorphosis
  • Enlargement of thyroid gland due to the insufficient iodine is called
                Simple goiter
  • Hormones secreted by Pancreas
                Insulin and Glucagon
  • Digestive juice produced by pancreas
                Pancreatic juice
  • Insulin producing tissues in pancreas is known as
                Islets of Langerhans
  • Alpha cells and Beta cells are present in 
                Islets of Langerhans
  • Hormones secreted by Alpha cells
                Glucagon
  • Hormones secreted by Beta cells
                Insulin
  • Disease caused by the deficiency of insulin
                Diabetis
  • Insulin produced outside human body
                Humulin
  • Normal value of blood sugar in human blood
                80 to 120mg/100ml
  • Condition of excretion of sugar through urine when its level in blood exceeds 150mg is called
                Diabetis melitus
  • Hormone which converts excess glucose into glycogen
                Insulin
  • Hormone which re-converts glycogen into glucose
                Glucagon
                                                                                   (To be Continued...)

Monday, January 29, 2018

Biology 4

വിറ്റാമിനുകളെ കുറിച്ചുള്ള കൂടുതൽ വിവരങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾപ്പെടുത്തിയിരിക്കുന്നത്
  • The name Vitamin was coined by
                   Casimir Funk
  • No of Vitamins discovered yet
                   13
  • No of Vitamins in B complex
                   8
  • Fat soluble Vitamins are
                   A,D,E, and K
  • Water soluble Vitamins are
                   B and C
  • Vitamins produced in small intestine due to the action of bacteria are
                   Vitamin B7, B5, K
  • Nutrients which kn  known as co-enzyme
                   Vitamins
  • Most important vitamin required for the health of eyes
                   Vitamin A
  • Vitamin which is abundant in green leafy vegetables
                   Vitamin A
  • Pigment which is known as pro vitamin A
                   Beta Carotene
  • Vitamin which is abundant in milk
                   Vitamin A
  • Vitamin which is abundant in bran
                   Vitamin B
  • Vitamin which is sensitive to light
                   Vitamin B2
  • Vitamin which gives pale yellow color to the milk is
                   Vitamin B2
  • Vitamin lost if milk is exposed to sunlight for a long time
                   Vitamin B2
  • Vitamin which is previously called as Vitamin H
                   Vitamin B7
  • Vitamin which prevent premature graying of hair and hair loss
                   Vitamin B7
  • Vitamin which contains the element Cobalt
                   Vitamin B12
  • Man made form of Vitamin B12, used to treat Vitamin B12 deficiency diseases
                   Cyanocobalamin
  • Main function of Cobalt in Vitamin B12
                   Absorption of Iron
  • The first artificially synthesized vitamin is
                   Vitamin C
  • Vitamin which deteriorates through cooking and canning of food
                   Vitamin C
  • Vitamin which give immunity to our body and helps to heal the wound
                   Vitamin C
  • Vitamin which improve the absorption of iron into blood
                   Vitamin C
  • Vitamin which excreted through urine
                   Vitamin C
  • Bleeding from gums occurs due to the deficiency of
                   Vitamin C
  • Relatively large doses of ascorbic acid may cause
                   Indigestion and diarrhea
  • Vitamin which is produced in the human body by the action of ultraviolet rays on the cholesterol present in the skin
                   Vitamin D
  • Vitamin required for the proper development of bones and cartilage is 
                   Vitamin D
  • Vitamin which helps to increase the rate of absorption of calcium into the body
                   Vitamin D
  • Two forms of vitamin D are
                   Vitamin 2 (Ergosterol), Vitamin D3 (Colcalciferol)
  • Vitamin which helps to protect the heart
                   Vitamin E
  • Vitamin which abundant in egg yolk is 
                   Vitamin E
  • Vitamin which helps blood clotting by forming prothrombin after an injury
                   Vitamin K
  • Vitamin known as Sunshine vitamin
                   Vitamin D
  • Vitamin known as Fresh food vitamin
                   Vitamin C
  • Vitamin known as Anti-sterility vitamin
                   Vitamin E
  • Vitamin known as Beauty vitamin
                   Vitamin E
  • Vitamin known as Hormone vitamin
                   Vitamin E
  • Vitamin known as anti ricketic vitamin
                   Vitamin D
  • Vitamin known as Coagulation vitamin
                   Vitamin K
  • Vitamin known as anti pellagra vitamin
                   Vitamin B3
  • Deficiency of vitamin A causes
                   Xerophthalmia and night blindness
  • Deficiency of vitamin B1 causes
                   Beri-Beri
  • Deficiency of vitamin B3 causes
                   Pellagra
  • Deficiency of vitamin B9 causes
                   Anaemia
  • Deficiency of vitamin B12 causes
                   Perinicious anaemia
  • Deficiency of vitamin C causes
                   Scurvy
  • Deficiency of vitamin D causes
                   Rickets in children and Osteomalacia in adults
  • Deficiency of vitamin E causes
                   Sterility
  • Deficiency of vitamin K causes
                   Hemorrhage
                                                                                  (To be Continued...)

Sunday, January 28, 2018

Biology 3

പ്രോട്ടീൻ, ഫാറ്റ്, മിനറൽസ്, ജലം തുടങ്ങിയ പോഷക ഘടകങ്ങളും വിറ്റാമിനുകളുടെ രാസനാമങ്ങളുമാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾപ്പെടുത്തിയിരിക്കുന്നത്
  • Proteins are made up of
                  Carbon, Hydrogen, Oxygen and Nitrogen
  • Functions of proteins are
                  Building up of body, growth and repair
  • Nutrients known as body builders
                  Protein
  • During starvation, which nutrient serve as source of energy
                  Protein
  • Basic building units of Proteins
                  Amino acids
  • Highest percentage of Protein (72%) is present in 
                  Soyabean
  • Digestion of Carbohydrate begins in 
                  Mouth
  • Digestion of Protein begins in 
                  Stomach
  • Deficiency of protein in children causes 
                  Marasmus and Kwashiorkar
  • Nutrient which turn yellow with Nitric acid
                  Protein
  • Simple unit of fat is
                  Triglyceride
  • Simple unit of Carbohydrate is
                  Glucose
  • Function of fat is
                  Serves as stored food for production of energy
  • Energy sources in human body
                  Fats and Carbohydrates
  • Main sources of fats are
                  Groundnuts, almonds, ghee, butter etc
  • Energy provided by one gram of Carbohydrate is
                  4 Calorie
  • Energy provided by one gram of Protein is
                  4.1 Calorie
  • Energy provided by one gram of Fat is
                  9.3 Calorie
  • Inorganic substances required by body in small quntities
                  Minerals
  • Minerals required for the production of haemoglobin
                  Iron
  • Minerals required for the production of Insulin
                  Zinc
  • Min daily requirement of Iron for an adult
                  10 mg
  • Defieiency of Calcium causes
                  Tetany (Muscles), Osteoporosis (Bones), Stunded growth
  • Minerals required in large amount (Macro minerals)
                  Sodium, Chlorine, Potassium, Calcium, Phosphorus, Magnesium and Sulphur
  • Minerals required by the body in traces are (Micro minerals)
                  Iron, Zinc, Iodine, Selenium, Copper, Manganese etc
  • Percentage of water in human body
                  65%
  • Quantity of water in body of a healthy person
                  35-40 Liter
  • Water content of Plasma
                  92%
  • Quantity of Plasma in blood
                  55%
  • Deficiency of Iron in human body causes
                  Anemia
  • Deficiency of Sodium in human body causes
                  Improper muscle contraction
  • Deficiency of Iodine in human body causes
                  Goiter, Cretinism, Myxodema
  • Deficiency of Zinc in human body causes
                  Reduced respiration
  • Chemical name of Vitamin A
                  Retinol
  • Chemical name of Vitamin B1
                  Thiamin
  • Chemical name of Vitamin B2
                  Riboflavin
  • Chemical name of Vitamin B3
                  Niacin (Nicotinic Acid)
  • Chemical name of Vitamin B5
                  Pantothenic acid
  • Chemical name of Vitamin B6
                  Pyridoxine
  • Chemical name of Vitamin B7
                  Biotin
  • Chemical name of Vitamin B9
                  Folic acid
  • Chemical name of Vitamin B12
                  Cobalamin
  • Chemical name of Vitamin C
                  Ascorbic acid
  • Chemical name of Vitamin D
                  Calciferol
  • Chemical name of Vitamin E
                  Tocopherol
  • Chemical name of Vitamin K
                  Phylloquinone
                                                                                 (To be Continued...)

Saturday, January 27, 2018

Biology 2

പ്ലാസ്റ്റിഡ്‌സ്, വർണ്ണവസ്തുക്കൾ, ജീവശാസ്ത്രത്തിലെ പ്രധാന പുസ്തകങ്ങൾ, പോഷകങ്ങൾ, കാർബോഹൈഡ്രേറ്റ്സ്‌ എന്നിവയുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാദത്തിൽ ഉൾപ്പെടുത്തിയിരിക്കുന്നത്
  • Flat circular organelle found in plant cells which is not present in animal cells
                 Plastids
  • Three types of plastids
                 Chloroplasts, Leucoplasts, and Chromoplasts
  • Site of Photosynthesis
                 Chloroplasts
  • Plastids which give colors to flowers and leaves of plants
                 Chromoplasts
  • Yellow color of turmeric is due to
                 Curcumin
  • Orange color of Carrot is due to
                 Carotene
  • Red color of tomato is due to
                 Lycopine
  • Light energy is converted into chemical energy in the presence of
                 Chloroplasts
  • Element present in Chlorophyll
                 Magnesium
  • White colored or colorless plastids are called
                 Leucoplasts
  • Plant that does not contain chlorophyll
                 Fungi
  • Pigment in Chloroplasts which gives green color to the plants
                 Chlorophyll
  • Pigment which gives purple and blue color to the flowers
                 Anthocyanin
  • Pigment which gives yellow color to the leaves, fruits and flowers
                 Xanthophyll
  • Which book is called as Physician's Handbook
                 Charaka Samhitha
  • Author of Ashtanga Hridayam
                 Vagbhadacharya
  • Author of Micrographia
                 Robert Hooke
  • Author of The origin of species
                 Charles Darwin
  • Author of History of Animals
                 Aristotle
  • Author of Interpetation of Dreams
                 Sigmund Freuyd
  • Author of The geographical distribution of Animals
                 Alfred Russel Wallace
  • Author of Systema Naturae
                 Carl Linnaeus
  • Organisms which prepare food their own are called as 
                 Autotrophs (Eg: Green plants)
  • Organisms which cannot prepare food their own and is mainly dependent on green plants are  called as 
                 Heterotrophs
  • Organisms which derive their food from dead and rotten materials are called as 
                 Saprophytes
  • Examples of Saprophytes
                 Bacteria, mushrooms, yeast, bread mould etc
  • Organisms that live on or inside other living organisms to derive their food are called
                 Parasites
  • Authority which testifies the purity and quality of bottles of jiuce, squash, soap etc
                 Fruit Product Order (FPO)
  • Examples of balanced diets
                 Milk, Soyabean
  • Carbohydrates are made up of
                 Carbon, Hydrogen and Oxygen
  • Ratio of Hydrogen and Oxygen in Carbohydrates
                 2:1
  • Examples of Carbohydrates
                 Glucose, Cellulose, Sugar starch etc
  • Major function of Carbohydrates
                 Production of energy
  • Sources of Carbohydrates are
                 Rice, wheat, honey, sugar, potato, carrot etc
  • In plants carbohydrate is stored as
                 Starch
  • In animals carbohydrate is stored as
                 Glycogen
  • Carbohydrate required for an adult person per day
                 400-500gm
  • Sugar present in high concentration in liver
                 Glycogen
  • Maximum starch content in rice is
                 70-80%
  • basic unit of starch is
                 Glucose
  • Deficiency of carbohydrate cause
                 Weight loss and tiredness
                                                                                       (To be Continued...)

Friday, January 26, 2018

Biology 1

ജീവശാസ്ത്രത്തിലേക്ക് കടക്കുമ്പോൾ പ്രധാന ശാസ്ത്രജ്ഞന്മാരും കോശങ്ങളുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഉൾപ്പെടുത്തിയിട്ടുള്ളത്.
  • The branch of science that deals with the study of living things
                   Biology
  • The term 'Biology' was coined by
                   Lamarck
  • The term 'species' was coined by
                   John Ray
  • Father of Biology
                   Aristotle
  • Father of Zoology
                   Aristotle
  • Father of Botany
                   Theophrastus
  • Father of Modern Botany
                   Carl Linnaeus
  • Father of Indian Botany
                   William Roxburgh
  • Scientist who discovered that the body of plant is made up of cells
                   MJ Schleiden
  • Scientist who discovered that the body of animal is made up of cells
                   Theodor Schwann
  • Nucleus was discovered by
                   Robert Brown
  • Structural and functional unit of life
                   Cell
  • The word 'cell' was derived from the Latin word 'cellula' meaning
                   Small room
  • Study of cells
                   Cytology
  • Cell was discovered by
                   Robert Hooke
  • A group of cells form a
                   Tissue
  • Study of tissue
                   Histology
  • Scientist who formulated the cell theory
                   MJ Schleiden and Theoder Schwann
  • Scientist who suggested that all new cells are derived from pre-existing cells by division (Modify cell theory)
                   Rudolf Virchow
  • Outermost covering of a plant cell is made up of
                   Cell wall
  • Outermost covering of an animal cell is made up of
                   Cell membrane
  • Cell wall is made up of
                   Cell wall
  • Cell wall is  
                   Hardest and undigestable sugar, Abscent in animal cells
  • Liquid found inside the cell is
                   Cytosol (Cytoplasm)
  • Fluid living content of a cell that consist of Ctoplasm and Nucleoplasm
                   Protoplasm
  • Physical basis of life is
                   Protoplasm
  • Cell without nucleus is called
                   Prokaryotic Cell
  • Cell with nucleus is called
                   Eukaryotic Cell
  • Cell organalle which converts oxygen and nutrients into energy
                   Mitochondria
  • Power house of a cell
                   Mitochondria
  • In mitochondria, energy is stored in the form of 
                   ATP (Adenosine Triphosphate)
  • Energy currency of a cell 
                   ATP
  • Kreb's cycle takes place in
                   Mitochondria
  • Cell organalle which helps in protein synthesis
                   Ribosomes
  • Suicidal bags in cells
                   Lysosome
  • Enzyme present in lysosome
                   Hydrolytic enzymes
  • Sectertory of the Cell
                   Golgi Complex
  • Cell organalle present in animal cells and not in Plant cell is
                   Centrioles
  • Skeltal system of the cell
                   Golgi Bodies
  • Genetic material of the cell
                   DNA
  • Brain of the cell
                   Nucleus
  • Kitchen of the cell
                   Chloroplast
  • Cell division that take place in plant and animals for growth
                   Mitosis
  • Cell division that take place in grem cells for the formation of gametes
                   Meiosis
  • Largest Cell
                   Egg of Ostrich
  • Smallest Cell
                   Mycoplasma
  • Largest Cell in human
                   Ovum
  • Smallest Cell in human
                   Sperm
  • Longest Cell in human
                   Neuron
  • Largest no of Cells in human body
                   Red Blood Cells (RBC)
  • Blood cell having longest lifespan in human
                   Red Blood Cells
                                                                             (To be Continued...)

Thursday, January 25, 2018

Chemistry 5

രാസമാറ്റങ്ങൾ, ലോഹങ്ങൾ അവയുടെ പ്രത്യേകതകൾ എന്നിവയാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾക്കൊള്ളിച്ചിരിക്കുന്നത്
  • A change in matter in which no new substances are produced
                 Physical Change
  • A change in matter in which one or more new substances are produced
                 Chemical Change
  • Examples for a chemical change
                 Burning of wood, Rusting of iron
  • Examples for a Physical change
                 Melting, Freezing, Dissolving
  • Elements which may loose electrons in chemical reaction are called
                 Metals
  • Element used in fire crackers to get sparkling red color flame
                 Strontium
  • Element used in fire crackers to get orange color flame
                 Calcium
  • Element used in fire crackers to get green color flame
                 Barium
  • Element used in fire crackers to get yellow color flame
                 Sodium
  • Element stored in oil due to its high reactivity
                 Barium
  • Radio active element in Alkaline Earth Metals
                 Radium
  • Radio active liquid element
                 Francium
  • Radio active gaseous element
                 Radon
  • Naturally occurring compound of Beryllium
                 Emerald
  • Property of metals capable of being drawn into wires is
                 Ductility
  • Property of metals capable of being hammered into very thin sheets is
                 Malleability
  • Property of metals to produce a ringing sound when it stuck with a hard surface
                 Sonority
  • Element which kept in wax
                 Lithium
  • The lightest metal
                 Lithium
  • Densest metal
                 Osmium
  • Hardest Metal
                 Chromium
  • Rainbow metal
                 Iridium
  • The strongest reducing agent
                 Lithium
  • Metals which kept in kerosene due to its high reactivity 
                 Sodium and Potassium
  • Elements which known as soft metals
                 Sodium and Potassium
  • Metal which regulates Blood pressure in human beings
                 Sodium
  • Compound of Sodium which is used as air purifier in submarines and in respiratory equipments
                 Sodium Peroxide
  • Chemicals used in fire extinguishers
                 Sodium Bicarbonate and Potassium Bicarbonate
  • Compound known as Baking Soda
                 Sodium bicarbonate (NaHCO3)
  • Compound known as washing Soda
                 Sodium carbonate (Na2CO3)
  • Mixture of sodium bicarbonate and Tartaric acid salt
                 Baking powder
  • Compound used as a fixer in photographic films
                 Hypo (Sodium Thiosulphate)
  • Element used as coolant in nuclear reactors
                 Liquid Sodium
  • Chemicals used for purifying water
                 Potassium Permanganate (KMnO4)
  • Metals related to arthritis
                 Potassium
  • Chemicals used in organic farming for neutralizing acidic soil 
                 Potassium bicarbonate
  • Raw material which is used in cement manufacturing
                 Lime stone
  • Compound which is used to regulate the setting time of cement
                 Gypsum
  • Perl is composed of 
                 Calcium carbonate and Magnesium Carbonate
  • Perl is soluble in
                 Vinegar
  • Gas released when heating lime stone
                 Carbon Dioxide
  • Gas which turns Milk of lime into Milky color
                 Carbon Dioxide
  • Coral reefs are composed of 
                 Calcium Carbonate
  • Compound contained in Bone mineral
                 Calcium Phosphate
  • Compound used for the dehydration of gases
                 Calcium oxide
  • Chemical name of bleaching powder
                 Calcium hypochlorite
                                                                                         (To be Continued...)

Wednesday, January 24, 2018

Chemistry 4

രാസപ്രവർത്തനങ്ങൾ, ഏറ്റവും കൂടുതൽ കാണപ്പെടുന്ന മൂലകങ്ങൾ എന്നിവയുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾപ്പെടുത്തിയിരിക്കുന്നത്
  • Substances that present in a chemical reaction which reacts together to form a product
                  Reactants
  • Final substances that are formed from a chemical reaction
                  Products
  • A substance that speed up a chemical reaction 
                  Catalyst
  • A chemical reaction in which heat is released
                  Exothermic reactions
  • A chemical reaction in which heat is absorbed
                  Endothermic reactions
  • A chemical reaction that involves the loss of electrons
                  Oxidation
  • A chemical reaction that involves the gain of electrons
                  Reduction
  • Ability of an atom to accept the electrons is known as 
                  Electronegativity
  • Electronegativity was discovered by
                  Linus Pauling
  • Electronegativity scale was discovered by
                  Linus Pauling
  • Ability of an atom to donate the electrons is known as 
                  Electropositivity
  • Union of atoms of two or more elements by mutual attraction 
                  Chemical bond
  • A bond formed by transferring electrons from one atom to another is called
                  Ionic Bond
  • A bond formed by sharing of electrons between the atoms is called
                  Covalent Bond
  • Combining capacity of an atom to another is called
                  Valancy
  • A process in which solid turns straight into a gas
                  Sublimation
  • Examples of Sublimation
                  Napthalene, Camphor
  • A process in which gas turns into solid
                  Deposition
  • A process in which liquid turns into gas
                  Vaporization
  • A process in which gas turns into liquid
                  Condensation
  • A process in which solid turns into liquid
                  Melting
  • A process in which liquid turns into solid
                  Freezing
  • Method for separating metals having low melting point
                  Liquation
  • Device in which electricity produced at cost of chemical reaction by oxidation-reduction process is known as 
                  Electro chemical cell
  • Process of heating the ore below its melting point in the absence of air to remove volatile impurities like Arsenic called
                  Calcination
  • Method to separate a mixture of colored compounds 
                  Chromatography
  • Deposition of a metal on another by electric current is called
                  Electroplating
  • Chemical reaction in which a substance reacts with water
                  Hydrolysis
  • Chemical decomposition by the action of heat is known as 
                  Pyrolysis
  • Process of heating milk to 72 degree about 16 seconds and then cooling it to 4 degree to destroy harmful bacteria is called
                  Pasteurization
  • Method of separating a substance from a mixture of liquids having different boiling points 
                  Distillation
  • Most abundant element in Earth crust
                  Oxygen (46.6%)
  • Second most abundant element in Earth crust
                  Silicon (27.7%)
  • Third most abundant element in Earth crust
                  Aluminium (8.3%)
  • Most abundant element in atmosphere
                  Nitrogen (78%)
  • Second most abundant element in atmosphere
                  Oxygen (21%)
  • Third most abundant element in atmosphere
                  Argon (0.9%)
  • Most abundant element in universe
                  Hydrogen
  • Most abundant element in human body
                  Oxygen
  • Most abundant metal in human body and developed animals
                  Calcium
  • Most abundant metal in Earth Crust
                  Aluminium
  • Most abundant metalloid in Earth Crust
                  Silicon
  • Most abundant element in sea water
                  Chlorine
  • Most abundant metal in bones
                  Calcium
  • Most abundant metal compound in bones
                  Calcium phosphate
  • Most abundant compound on Earth's surface
                  Water
  • Most abundant compound in sea water
                  Sodium Chloride
  • Second most abundant compound in sea water
                  Magnesium Chloride
  • Second most abundant compound in Earth crust
                  Magnesium Oxide
                                                                                                  (To be Continued...)

Tuesday, January 23, 2018

Chemistry 3

ആവർത്തന പട്ടികയുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾപ്പെടുത്തിയിട്ടുള്ളത്
  • Father of Periodic table\Periodic table was discovered by
                 Dmitri Mendeleev
  • Father of Modern Periodic table
                 Moseley
  • Periodic law was put forward by
                 Dmitri Mendeleev
  • Modern Periodic law was put forward by
                 Moseley
  • Atomic number of elements were discovered by
                 Moseley
  • Periodic table of Mendeleev was based on increasing order of
                 Atomic mass
  • Who classified elements based on atomic volume
                 Lother Meyer
  • Modern Periodic table is based on increasing order of
                 Atomic Number
  • Scientist who established measuring and weighing methods in Chemistry
                 Lavoisier
  • Horizontal rows of elements in Periodic table 
                 Periods
  • No of periods in Periodic table 
                 7
  • Vertical column of elements in Periodic table 
                 Groups
  • No of groups in Periodic table 
                 18
  • Shortest period
                 First Period (Contains only two elements)
  • No of elements in periodic table
                 118
  • No of naturally occurring elements in periodic table
                 92
  • First artificial element
                 Technetium (Atomic number 43)
  • Last natural element in periodic table
                 Uranium
  • Position of metals in periodic table
                 Left side
  • Position of non metals in periodic table
                 Right side
  • Natural element having highest atomic weight and atomic number
                 Uranium (92)
  • Characteristic of element in one group
                 No of electrons in outermost shell are same
  • Element having atomic number greater than that of Uranium and do not occur in nature are called 
                 Synthetic (Transuranic) elements
  • Element having name of Earth
                 Tellurium
  • Element having name of Moon
                 Celenium
  • Element having name of Sun
                 Helium
  • Element having name of an asteroid
                 Palladium
  • Elements which are named in the honor of women
                 Curium, Meitnarium
  • Group 1 elements are called
                 Alkali Metals
  • Group 2 elements are called
                 Alkaline Earth Metals
  • Elements with atomic number 57-71 are called
                 Lanthanides (Rare earths)
  • Elements with atomic number 89-103 are called
                 Actinides (Radio active rare earths)
  • Elements included in 3-12 groups are called
                 Transition elements
  • Elements other than transition elements are called
                 Representative elements
  • Specialty of transitive elements
                 They all are metals and form colored compounds
  • Element does not have neutrons in an atom
                 Hydrogen
  • Liquid transitive metal
                 Mercury
  • Liquid metal at room temperature
                 Mercury
  • Liquid non metal at room temperature
                 Bromine
  • Metal used as a thermometric fluid
                 Mercury
  • Metal which is used in atomic clocks
                 Caesium
  • Element used in the dials of clock
                 Radium
  • Radium and Plutonium are discovered by
                 Marie Curie
  • Metal which shows least expansion
                 Caesium
  • Element having highest electro negativity
                 Fluorine
  • Element having least electro negativity
                 Francium, Caesium
  • Most electro positive stable element
                 Caesium
                                                                                 (To be Continued...)

Monday, January 22, 2018

Chemistry 2

മൂലകങ്ങൾ, മോളിക്യൂൾ, സംയുക്തം, മിശ്രിതം തുടങ്ങിയ ഭാഗങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾപ്പെടുത്തിയിരിക്കുന്നത്
  • Smallest particle of substance having all its properties
                 Molecules
  • The term 'Molecule' was coined by
                 Avogadro
  • No of molecules contained in 1 mole of gas is called
                 Avogadro number
  • Avogadro number is
                 6.03x1023
  • International Mole day
                 October 23
  • Kinetic Energy of molecules is maximum in
                 Gases
  • Names given to the shells where electrons located around the nucleus
                 K, L, M, N, O, P and Q
  • Electrons in the outermost shell of an atom which determines its chemical property is called
                 Valance electrons (Valance Shell)
  • Sub shells of electron shells are named as
                 s, p, d, f and g
  • Maximum number of electrons in each sub shells are
                 s: 2, p: 6, d: 10, f: 14 and g: 18
  • Substances which composed of similar kind of atoms is called
                 Element
  • The term element was coined by
                 Robert Boyle
  • The scientist who first gave definition to the term 'element'
                 Robert Boyle
  • The scientist who gave symbols for elements on the basis of their names
                 Berzelius
  • The scientist who classified elements into metals and non metals
                 Lavosier
  • Elements are classified into
                 Metals, non metals and metalloids
  • Elements that conduct electricity, heat and which tend to lose electrons to form positive ions
                 Metals
  • Elements that do not conduct electricity, heat and which tend to accept electrons to form negative ions
                 Non-Metals
  • Elements showing properties of both metals and non metals
                 Metalloids
  • International association which gives names of Elements
                 International Union of Pure and Applied Chemistry (IUPAC)
  • Substances composed of atoms of 2 or more elements combined in a definite proportion by weight is known as 
                 Compound
  • Substances composed of atoms of 2 or more compounds or elements combined in any proportion by weight is known as 
                 Mixture
  • Element which forms largest number of compounds
                 Carbon
  • Second element which forms largest number of compounds
                 Hydrogen
  • Atoms of same element having same atomic number and different mass number are known as 
                 Isotopes
  • Isotopes of Hydrogen are
                 Protium, Deuterium, Tritium
  • Isotopes are discovered by
                 Frederick Soddy
  • Isotope which is used to determine the age of fossils (Carbon dating)
                 Carbon 14
  • Isotope which is used for the treatment of cancer
                 Cobalt 60
  • Isotope which is used for the treatment of skin cancer
                 Phosphorous 32
  • Isotopes which are used as medicines
                 Oxygen 15, Iodine 131
  • Atoms of different elements having same mass number and different atomic number
                 Isobars
  • Atoms of elements having same number of Neutrons 
                 Isotones
  • Compounds with same molecular formula and different structure are known as
                 Isomers
  • Different forms of same element with different physical appearances
                 Allotropes
  • Example of an allotrope 
                 Diamond, Graphite and Charcoal are allotropes of Carbon
  • Allotrope of Oxygen
                 Ozone
  • Fructose is an isomer of
                 Glucose
                                                                                                          (To be Continued...)

Sunday, January 21, 2018

Chemistry 1


സയൻസിലെ രണ്ടാമത്തെ ഭാഗമായ രസതന്ത്രത്തിലേക്ക് കടക്കുമ്പോൾ ആദ്യം ആറ്റം, ഘടകങ്ങൾ, മോഡലുകൾ, പ്രധാന ശാസ്ത്രജ്ഞന്മാർ എന്നിവയാണ് ആദ്യ പാഠത്തിൽ ഉൾക്കൊള്ളിച്ചിരിക്കുന്നത് 
  • Ancient name of Chemistry
               Alchemy
  • Father of Chemistry
               Robert Boyle
  • Father of Modern Chemistry
               Antoine Lavoisier
  • International year of Chemistry
               2011
  • All substances are made up of tiny particles called
               Atoms
  • Meaning of the word Atom (Greek word atomos)
               Indivisible
  • Atom was discovered by
               John Dalton
  • Law of multiple proportion was put forward by
               John Dalton
  • First atomic theory was put forward by
               John Dalton
  • The term 'Atom' was coined by
               Ostwald
  • Fundamental particles of Atom
               Proton, Neutron and Electron
  • Center of Atom that contains Protons and Neutron
               Nucleus
  • Sub atomic particles in Nucleus (Nucleons)
               Proton and Neutron
  • Heaviest Sub atomic particle
               Neutron
  • Lightest Sub atomic particle
               Electron
  • Moving particle of Atom
               Electron
  • Antiparticle of Neutron with same mass of a Neutron
               Anti-neutron
  • Antiparticle of Proton with same mass of a Proton
               Anti-proton
  • Nuclear particle with the mass of an Electron but opposite charge
               Positron
  • Electron was discovered by
               JJ Thomson
  • Proton was discovered by
               Ernest Rutherford
  • Nucleus was discovered by
               Ernest Rutherford
  • Neutron was discovered by
               James Chadwick
  • Charge of Electron
               Negative
  • Charge of Proton
               Positive
  • Charge of Nucleus
               Positive
  • Charge of Neutron
               No Charge
  • Chemical property of a substance is determined by
               Electrons
  • Number of Protons present in the nucleus of an Atom
               Atomic Number (Z)
  • Total number of Protons and Neutrons present in the nucleus of an Atom
               Mass Number (A)
  • An atom is bigger than its Nucleus
               105 times
  • Circular path on which electrons move around is called
               Orbit
  • The orbit followed by moving electrons around Nucleus of an Atom is called
               Shell
  • Maximum number of electrons in a shell is
               2n2 (n- Number of Shell)
  • The first model of atom was put forwarded by
               Neils Bohr
  • The most acceptable model of atom
               Bohr's Model
  • Planetary model or Nuclear model of atom was put forwarded by
               Rutherford
  • Plum pudding, Molecular model of atom was put forwarded by
               J J Thomson
  • Wave mechanics model of atom was put forwarded by
               Max Plank
  • Dual nature of Electron was put proposed by
               Louis Debroglie
  • Uncertainty principle was put proved by 
               Werner Heisenberg
  • Atom without Nuetron
               Hydrogen
  • Unit of measuring mass of an Atom is
               Atomic Mass Unit (a.m.u)
  • Element used to find a.m.u
               Carbon 12
                                                                                                    (To be Continued...)

Saturday, January 20, 2018

Physics 5


ലെൻസുകൾ, മിററുകൾ, ഇലക്ട്രോ മാഗ്നെറ്റിക് വേവ്‌സ് , രാമൻ എഫക്ട് എന്നിവയാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾപ്പെടുത്തിയിരിക്കുന്നത്
  • Lens using in microscope, telescope etc for magnifying images
                  Convex lens
  • Lens thicker at center and narrower at edge
                  Convex lens
  • Lens in human eyes
                  Convex lens
  • Image formed in convex lens
                  Real and Inverted
  • Lens narrower at center and thicker at edge
                  Concave lens
  • Image formed in concave lens
                  Virtual and erect
  • Camera not using lens
                  Pinhole Camera
  • Focal length and power of convex lens is always
                  Positive
  • Focal length and power of concave lens is always
                  Negative
  • Power of a lens increases as its focal length
                  Decreases
  • Power of a lens is always
                  Resiprocal of focal length (P=1/f)
  • Dentists and ENT doctors using which type of mirrors
                  Concave Mirror
  • Type of image formed from Concave mirror
                  Virtual or real image depends on the position of object
  • The image obtained from a light ray that do not actually come from the point of source is called
                  Virtual Image
  • Shape of reflector behind a spot lamp or car head light 
                  Parabolic
  • Size of object and image are same in
                  Plane Mirror
  • Shortest length of a plane mirror required to view the full size image of person of height L is
                  L/2
  • Persistance of vision in human eye is
                  1/16 Seconds
  • Ratio of height of the Image to the height of real object is known as
                  Magnificatin
  • Speed of movies
                  24 frames per Second
  • Phenominon of appearing right side of a person in mirror image as left side is called
                  Lateral Invertion
  • Convex lens is also known as
                  Converging lens
  • Concave lens is also known as
                  Diverging lens
  • Power of lens is measured in
                  Diopter
  • Mirror used in Solar cooker, Car head light
                  Concave Mirror
  • Mirror used in rear view mirrors in vehicles
                  Convex Mirror
  • Mirror used in Shaving mirrors
                  Concave Mirror
  • Short sight and long sight can be corrected together by
                  Bifocal lens
  • Bifocal lens was invented by
                  Benjamin Franklin
  • Wave range of electro magnetic waves
                  103 m to 1012 m
  • Electro magnetic waves are
                  Radio waves, micro waves, infra red, visible region, UV, S-rays and gamma rays
  • Electro Magentic wave with maximum wave length
                  Radio waves
  • Electro Magentic waves used for communication through satellites
                  Microwave
  • X rays discoverd by
                  Rongen
  • X rays with higher frequency and more penetrating power
                  Hard X rays
  • X rays using for radiation and treatment of cancer
                  Hard X rays
  • X rays using for photography of internal parts
                  Soft X rays
  • X rays originated from outside of Earth is called as
                  Cosmic rays
  • Waves using in TV remotes and distant photography
                  Infrared
  • Heat of light is due to
                  Infrared
  • Waves using for detecting the adulteration of ghee, identification of counterfeit currency
                  Ultra Violet
  • Waves using to disinfect surgical equipments, and in tube lights
                  Ultra Violet
  • CV Raman discovered Raman effect in 
                  1928 February 28
  • National Science day
                  February 28
  • CV Raman got nobe prize for Physics in 
                  1930
  • Raman effect is associated with 
                  Scattering of light
                                                                              (To be Continued...)

Friday, January 19, 2018

Physics 4

പ്രകാശത്തിൻറെ പ്രത്യേകതകളായ റിഫ്‌ളക്‌ഷൻ, റിഫ്രാക്‌ഷൻ, ടോട്ടൽ ഇൻറെർണൽ റിഫ്‌ളക്‌ഷൻ, ഡിസ്പേഴ്‌സൺ, ഇന്റർഫെറൻസ്, ഡിഫ്രാക്ഷൻ, സ്‌കാറ്ററിങ്, പോളറൈസേഷൻ, ഡോപ്ലർ എഫക്ട് എന്നീ സുപ്രധാന ഭാഗങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ ഉൾക്കൊള്ളിച്ചിരിക്കുന്നത് 
  • Color having minimum wavelength
                 Violet
  • Color having maximum wavelength
                 Red
  • Color having minimum frequency
                 Red
  • Color having maximum frequency
                 Violet
  • Light that scatters most
                 Violet
  • Light that scatters least
                 Red
  • Color which reflects all other colors
                 White
  • Color which absorbs all other colors
                 Black
  • Color which absorbs maximum heat
                 Black
  • Color which absorbs minimum heat
                 White
  • Color which appears on the upper portion of the rainbow
                 Red
  • Color which appears on the center of the rainbow
                 Green
  • Color which appears on the lower portion of the rainbow
                 Violet
  • Distance traveled by light in one year
                 Light year
  • Unit used to measure distance between stars
                 Light year
  • One light year is
                 9.46x1012
  • One Parsec is
                 3.26 light years
  • Quantum theory was put forward by
                 Max Plank
  • According to Quantum theory, energy packets in light rays called
                 Quantum
  • Quantum of light is known as 
                 Photon
  • Phenomenon of emission of light from substances after absorption of Photons called as
                 Photo Luminescence
  • Phenomenon of bouncing back of light when a beam of light falls on a surface
                 Reflection
  • Bending of light when a ray of light travels from one medium to another
                 Refraction
  • Phenomena of Mirage in deserts, Twinkling of stars, bending scale immersed in water\glass etc are due to
                 Refraction
  • Reason for refraction of light when travels from one medium to another
                 Phase velocity of wave is changed but its frequency remain constant
  • Snell's law is related with
                 Refraction
  • Fata Morgana is a term associated with
                 Mirage (Superior form of Mirage)
  • Measure of optical density of a medium is
                 Refractive index [Speed of light in vacuum/Speed of light in medium]
  • Refractive index of Vacuum
                 1 [Ice : 1.31, Water : 1.33]
  • Refractive index of Diamond
                 2.42
  • Working principle of Optical fiber, endoscopy, Vehicle reflectors, Binoculars
                 Total Internal Reflection
  • Sparkling of Diamond is due to
                 Total internal reflection in high refractive index
  • Splitting of composite beam of light into its constituent colors is called
                 Dispersion of light
  • Dispersion of light is discovered by
                 Issac Newton
  • Device used to split composite light into constituent colors
                 Prism
  • Rainbow is caused by
                 Total internal reflection, refraction and dispersion of light by water particles
  • Red color in rainbow is seen at an angle of
                 42.8 Degree
  • Violet color in rainbow is seen at an angle of
                 40.8 Degree
  • Shape of rainbow while seeing from space
                 Circle
  • Distribution of light when two or more high waves superimpose each other is called
                 Interference
  • Colors in soap bubbles, oil layers etc are due to
                 Interference
  • Interference was first observed by
                 Thomas Young
  • Working principle of Holography\Hologram
                 Interference
  • Process of spreading out of light into geometrical shadow of obstacle is called as 
                 Diffraction
  • Projector in film theaters works on the principle of 
                 Diffraction
  • Rings around the sun, Fringe pattern of CD etc are due to
                 Diffraction
  • Blue color of Sky, Reddening of Sun at sunrise and sunset are due to
                 Scattering of light
  • The light color which scatters most
                 Violet (Having shorter wave length)
  • The light color which scatters least
                 Red (Having longer wave length)
  • Black color of sky in Moon is due to 
                 Absence of scattering of light as there is no atmosphere
  • Phenomenon of confining the vibration of a transverse wave to a particular direction is called
                 Polarization
  • Brewster's Law is associated with
                 Polarization of Light
  • Example of natural polarizing material
                 Tourmaline
  • Polaroids are using in 
                 Aeroplane and car windows, sun glasses, Three dimensional pictures
  • Light scattering by the particles in a colloid is known as
                 Tyndal effect
  • Example of Tyndal effect
                 Sunlight passing through mist, blue color seen in smoke emitted from motor cycles
  • Change in frequency of a light or sound wave when source or observer moves with respect to the other is known as
                 Doppler effect
  • Increase in frequency (decrease in wave length) of visible light when it moves towards observer is called
                 Blue Shift
  • Decrease in frequency (Increase in wave length) of visible light when it moves towards observer is called
                 Red Shift
  • Blue shift, Red Shift, High pitch of siren of approaching ambulance is due to
                 Doppler effect
                                                                                                  (To be Continued...)