Friday, May 4, 2018

Chemistry 11

അലസ വാതകങ്ങൾ, വാതക നിയമങ്ങൾ, ആസിഡുകൾ എന്നിവയുമായി ബന്ധപ്പെട്ട ചോദ്യങ്ങളാണ് ഇന്നത്തെ പാഠത്തിൽ
  • Valency of Inert gases
                 Zero
  • Inert gases or Noble gases are
                 Helium, Neon, Argon, Crypton, Xenon and Radon
  • Which group is called as zero group elements
                 Group 18
  • Inert gases are discovered by
                 William Ramsay
  • Lightest gas after Hydrogen
                 Helium
  • Gas which is used in atmospheric baloons and sky ships
                 Helium (because of non inflamable ability than Hydrogen)
  • Inert gas having highest thermal conductivity
                 Helium
  • Inert gases using for welding
                 Helium, Argon
  • Gas used in advertising sign boards
                 Neon
  • Gas used in incandascent bulbs
                 Argon
  • Noble gas known as hidden gas
                 Krypton
  • Noble gas known as stranger gas
                 Xenon
  • Largest and heaviest gaseous atom
                 Radon
  • Inert gas derived from radio active disintegration of Radium
                 Radon
  • Which is known as wonder drug
                 Aspirin
  • Which law states that volume of a gas is inversely proportional to pressure 
                 Boyle's law
  • Which law states that volume of a gas is directly proportional to temperature
                 Charle's law
  • Which law states that volume of a gas is directly proportional to the amount of molecules present at constant temperature and pressure
                 Avogadro's law
  • Ideal gas equation is
                 PV=nRT (R universal gas constant)
  • Which is known as King of Chemicals
                 Sulphuric acid
  • Earliest known acid
                 Acetic acid (Vinegar)
  • Scale used to express acidity or alkalinity based on concentration of hydrogen ions
                 pH scale (Potential of Hydrogen)
  • pH scale discovered by
                 Soren Sorensen
  • pH value of bases
                 Greater than 7 (7-14)
  • pH value of Acids
                 Less than 7 (0-7)
  • pH value of water
                 7
  • Solution which resists changes in pH by the addition of Acids and Alkalies
                 Buffer Solution
  • Taste of acids
                 Sour
  • Substances which change of litmus from violet to red
                 Acids
  • Oxides and hydroxides of metals are called
                 Bases
  • Base which is in the name of an acid
                 Boric acid
  • Gastric juice contains which acid to help digestion
                 Hydrochloric acid
  • Acid used in tanning and printing industry
                 Hydrochloric acid
  • Acid without Oxygen
                 Hydrochloric acid
  • Acid which fumes in air
                 Nitric acid
  • Acid which using for purity testing of Gold
                 Nitric acid
  • Acid which used as oxidizer in rocket propellants
                 Nitric acid
  • Acid which used in lead storage batteries
                 Sulphuric acid
  • Acid which used in manufacture of dynamite as an explosive
                 Sulphuric acid
  • Acid which used for the refining of oil and treatment of waste water
                 Sulphuric acid
  • Acids used for the manufacturing of fertilizers, chemicals, explosives, and paints
                 Sulphuric acid and Nitric acid
  • Acid known as ethanoic acid
                 Acetic acid
  • Acid which used for food preservation
                 Sorbic acid and Benzoic acid
  • Acid which used to clean tooth surface
                 Phosphoric acid
  • Acid which present in Soft drinks
                 Carbonic acid and Phosphoric acid
  • Acid which present in Soda water
                 Carbonic acid
  • Acid which present in muscles
                 Lactic acid
  • Acid which used as sedative in hypnotism
                 Barbituric acid
  • Acid used for vulcanization of rubber
                 Formic acid
  • pH value of Urine
                 6 (Uric acid)
  • pH value of Gastric acid
                 1-3.5
  • pH value of Sea water
                 8
  • pH value of Ammonia
                 10.6-11
  • pH value of Blood
                 7.4
  • pH value of Milk
                 6.5
  • pH value of Tea
                 5.5 (Tannic acid)
  • pH value of Coffie
                 5
  • pH value of Vinegar
                 2.9
  • pH value of Lemon Juice
                 2.4 (Citric acid)
  • Alkali used to reduce the acidic nature of soil
                 Calcium hydroxide
  • Color of phenolphthalein in base
                 Pink
  • Color of phenolphthalein in acid
                 No color
  • Hydrochloric acid and Nitric acid are discovered by
                 Jabir Ibn Hayyan
  • Chemical name of Aspirin
                 Acetyl Salicylic acid
  • Weakest inorganic acid
                 Hydrocyanic acid
  • Strongest inorganic acid
                 Perchloric acid
  • Sweetest acid
                 Sucronic acid
  • Strongest super acid
                 Fluroantimonic acid
  • Which is called as carbolic acid
                 Dilute Phenol
  • Artificial coloring agent added in food products are
                 Dyes
  • Acid which is known as Aquafortis
                 Nitric acid
  • Acid which is known as Spirit of Nitre
                 Nitric acid
  • Acid which is known as Spirit of Salt
                 Hydrochloric acid
  • Acid which is known as Muriatic Acid
                 Hydrochloric acid
  • Acid which is known as Oil of Vitriol
                 Sulphuric acid
                                                                                      (To be Continued...)

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