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• Who is the father of modern chemistry?        Antonie Lavoisier.
• Who first suceeded in liquifying Carbondioxide?        Therilorier.
• The substance known as Superliquid:        Liquid helium.
• The chemical name for marble:        Calcium Carbonate.
• The whitest substance:        Titanium dioxide.
• Which element is the basis of life on earth?        Carbon.
• The chemical name for saltpetre:        Potassium Nitrate.
• The chemical name for salanmonic:        Ammonium Chloride.
• The scientific name for soda water?        Carbonic acid.
• What is the chemical composition of silk?        Protein molecules.
• Which is the earliest chemically made fibre?        Nylon.
• Who produced Nylon?        W. H. Carathers.
• Which acid is used in the production of Terylene?        Terephthalic acid.
• Chemical used for purifying water:        Bleaching powder.
• Which is the most soluble gas in water?        Ammonia.
• The chemical used in producing metal fibres:        Aluminium, Plastic.
• The cloth made of metal fibres:        Orris cloth.
• The chemical name for Dynamite:        Glycerine trinitrate.
• What are the inert gases?        Argon, Neon, Helium, Crypton, Xenon, Radon.
• The ore used for the large scale production of Iron?        Haematite.
• The Aluminium combination in gold:        The Aluminium bronze.
• A sublimating element:        Iodine.
• The main rays emanated by radio active elements:        Alpha, Beta and Gamma rays.
• The constituents of marble:        Calcium, Carbon, Oxygen.
• The constituents of salt petre:        Potassium, Nitrogen, Oxygen.
• Which is having the highest solubility in water?        Sulphur dioxide.
• Why fire flames up when the wind blows?        Because air contains oxygen.
• The most stable allotrophic form of sulphur:        Rhombic Sulphur.
• How many elements (naturally-occuring) are detected so far?        So far 94 elements are detected, ie 2 liquids 11 gases and 81 solids.
• Which is the  brilliant form of Carbon?        Diamond.
• The elements present in sugar:        Carbon, Hydrogen and Oxygen.
• Which is the major element found in air?        Nitrogen.
• The quantity of Nitrogen in air:        78%
• The first element in the Periodic table:        Hydrogen.
• An acid which does not contain oxygen        Hydrochloric acid.
• The major element in the constitution of protein:        Nitrogen.
• The most active element found in nature:        Flourine.
• The scientist who first isolated flourine:        Henry, Moison.
• A gas which fumes in air.        Hydrogen Chloride.
• The salt required for production of gun powder:        Potassium Nitrate.
• The ore used in the extraction of aluminium:        Bauxite.
• The rare metal used in the production of paint:        Titanium.
• A solution which is neither acidic nor basic:        Neutral solution.
• The movement by the collision of colloidal particles with the molecules of the medium:        Brownean movement.
• The artificial manure containing the largest quantity of Nitrogen:        Urea-34%
• The chemical fertilizer found free in Chile:        Sodium Nitrate.
• Which chemical fertilizer contains the largest quantity of Potassium?        Muriate of Potash.
• What is the chemical name for Muriate of  Potash?        Potassium Chloride.
• What is the chemical name for factomphos?        Ammonium carbonate.
• Which country first made chemical fertilizer by using Nitrogen produced from air?        Germany.
• Which is not a rare gas out of Helium, Nitrogen and Neon?        Nitrogen.
• What are the components of Magnalium?        Magnesium Aluminium.
• Which substance is known as Epsom salt?        Magnesium Sulphate.
• Which scientist has propounded the corpuscular theory of light?        Newton.
• A metal in liquid state:        Mercury.
• Why copper is added to gold?        For hardness.
• Which is the universal solvent?        Water.
• Which radio active element is found in Kerala?        Thorium.
• Which are the components of Nimonic alloy?        80% Nickel + 20% Chromium.
• The chemical formula for rubber?        C5 H8
• Which scientist has established the formula of rubber?        Michael Faraday.
• Who made artificial rubber?        Gustave Von Chardet - in 1827.
• How is vulcanite made?        By adding Rubber and Sulphur in the ratio 1:1
• Who were awarded Nobel prize for the discovery of Penicillin?        Alexander Fleming and Flory.
• The chemical name for Dynamite:        Glycerine trinitrate.
• What is phenobarbitone?        A scdative.
• Who prepared chloroform as an anasthetic?        James Simpson.
• Who discovered anasthetics?        Motton, Jackson.
• Which disease is treated by ratio cobalt?        Cancer.
• The medicine containing radio gold which is administered into the body:        Aurcolloid.
• The atomic weight of radio carbon:        Fourteen  (14)
• The instrument used to measure the intensity of radiation:        Gieger Muller Counter.
• The chemical name for the rat poison:        Zinc phosphide.
• Three isotopes of Carbon:        C12   C13   C14.
• A liquid in which gold dissolves:        Aqua regia.
• The chemical name of gypsum:        Calcium Sulphate.
• The gas which turns lime water milky:        Carbondioxide.
• What is meant by metallurgy?        The process by which the pure metal is extracted from its ore.
• What is the speciality of the alloy "Alnico"?        It shows magnetic properties.
• What is meant by "Solder"?        Alloy of tin and lead.
• Substance with the highest heat capacity:        Water.
• Which is the element with atomic number 100?        Fermium.
• The element with atomic weight 1.0087        Hydrogen
• A carbohydrate insoluble in water:        Starch.
• Who discovered the composition of water:        Lavoisier.
• Who established that water is the oxide of Hydrogen?        Cavendish - in 1676.
• Which is the artificial fiber first made by man?        Rayon.
• Who was the first to make Rayon?        Chardanet.
• What is the chemical structure of Rayon?        Cellulose molecule.
• The artificial fiber first produced in India:        Rayon.
• The institution in India which does research on artificial fibres:        SASMIRA.
• Which is the location of SASMIRA? What is its full form?        Bombay-Silk and Artsilk Mills Research Association.
• A cloth which is resistant to bullet:        Nylon bullet proof cloth.
• Artificial fiber used for making fishing net:        Nylon.
• What is called "Darvau"?        Hair like artificial fiber.
• Artificial fiber used in the treatment of the rheumatism:        Rohvyl.
• What is the peculiarity of Rohvyl fiber?        It produces positive static electricity.
• Cloth made of the fleece of sheep:        Woollen cloth.
• Which is the first Rayon factory in India?        Mavoor Gwalior Rayons (1963).
• A chemically inactive artificial fiber:    Teplon.
• The metal added to gold for making ornaments:        Copper.
• Why pure gold is not used for making ornaments?        Because it is very soft.
• Which is responsible for the electrical nature of atom?        Free electron.
• Which kind of steel is used for making blade?        High carbon steel.
• What are the constituents of kerosene oil?        Carbon, Hydrogen.
• The constituent elements of potassium chlorate:        Potassium, Chlorine, Oxygen.
• Two metals which are purified by vapourisation?        Mercury Zinc.
• A liquid in which phosphorous dissolves:        Carbondisulphide.
• What happens when white phosphorous is exposed to air?         It fumes and burns.
• What is sublimation?        The phenomenon by which substances on heating change directly into vapour with out first becoming liquid.
• Two compounds which sublimate:        Camphor Salammoniac, (ammonium chloride).
• The gas formed by the combination of Nitrogen and Hydrogen:        Ammonia.
• The constituents of slaked lime:        Calcium, Oxygen, Hydrogen.
• The constituents of bleaching powder:        Calcium, Oxygen, Hydrogen.
• The laboratory where the first atom bomb was made:        Los Alamos (America).
• Which is the particle having the same mass but opposite in charge to that of an electron?        Positron.
• The most abundant variety of uranium found in nature:        U328.
• The number of protons in the nucleus of  a uranium atom:        (92)
• The particles and radiation emanating from the nucleus of a radio-active element:        Alpha, Beta, Gamma.
• When was the first hydrogen bomb tested?        On 1st November 1952-in Marshal Island.
• The element used by India for nuclear explosion:        Plutonium.
• The date of India's first nuclear explosion:        On 18th May 1974 (in Rajastan)
• The first chairman of Atomic Energy Commission of India:        Homi, J. Bhabha.
• The first atomic reactor in Asia:        Apsara (Tarapur Nuclear power station, Bombay).
• The first nuclear reactor in India made indigenously:        Purnima (Kalpakam)
• The essential substance for combustion:        Oxygen.
• The germicidal component in bleaching powder:        Chlorine.
• The places which became the first victims of atom bomb:        Hiroshima, Nagasaki (Japan).
• The gas produced by mixing carbon monoxide and Nitrogen:        Producer gas.
• Which is known as the king of chemicals?        Sulphuric acid.
• The acid found in lemon fruit:        Citric acid.
• The acid present in butter milk:        Lactic acid.
• Which is laughing gas?        Nitrous Oxide.
• Which are rare gases?        Neon, Argon.
• Elements in liquid state:        Mercury, Bromine.
• The lightest gas:        Hydrogen.
• What is meant by tempering?        Suddenly cooling after heating a substance strongly.
• What is the expansion of T. N. T.?        Tri Nitro Toluene.
• What is the meaning of "detergent"?        A substance which cleans.
• To which language does the word "detergent" belong?        Latin.
• Two metals kept in kerosene:        Sodium, Potassium.
• What is meant by amalgamation?        Plating a metallic surface with mercury.
• A liquid in which sulphur dissolves:        Carbondi sulphide.
• Where is yellow phosphorous kept?        In water.
• The chemical name for blue vitriol:        Copper, Sulphate.
• What is meant by slacking?        The process of converting quick lime to slacked lime by adding water.
• Which is the seventy second element?    Hafnium.
• A non-metallic, element in liquid state.        Bromine.
• What is the peculiarity of hydrogenated oil?        It loses its smell.
• The components of solder:        Tin + lead.
• The electricity produced in a dry-cell:        Direct current (D. C.)
• What is the measure of radio activity?        Curie.
• Why ice floats on water?        Because density of ice is lower than that of water.
• A crystal without water of crystallisation:        Potassium Carbonate.
• A deliquescent substance:        Magnesium sulphate.
• The chemical formula of Sulphuric acid:        H2 SO4.
• A Solvent of wax:        Turpentine.
• The chemical formula for Nitric Acid:        HNO3.
• A salt used in making ink:        Ferrous sulphate.
• The chemical formula of hydrochloric acid:        HCL.
• On what does the height of mercury column in  a mercury barometer depend?        It depends on the purity of mercury used and on the atmospheric pressure.
• An allotrope of Oxygen:        Ozone.
• What is an Alloy?        It is a mixture or compound of two or more metals.
• What are the components of brass?        Copper and Zinc.
• Who developed vulcanised rubber?        G. Goodyear (U. S. A - 1931 ).
• What is the chemical formula of phosphoric acid?        H3 PO4.
• Who found out the structure of Hydrogen Peroxide?        Gaylusac.
• The chemical contained in tobacco:        Nicotine.
• The liquids used in refrigerator:        Ammonia, Freon etc.,
• Why a clinical thermometer should not be dipped in to boiling water?        Because the Mercury will expand with the heat and break the thermometer.
• Why water pipes burst in severe cold?        The volume of the water will increase when it changes in to ice.
• What is Catalyst?        Substance which helps chemical reactions to take place, but which are not themselves used up in the process.
• Who first predicted elements?        Dimitri Mandelveev, the Russian Chemist in 1869.
• Which is the most common mineral?        Quartz or silica is the most common mineral.
• What is the difference between a solute and a solvent?        In a solution of one substance in another, the dissolved substance is called the solute and the substance in which the solute is dissolved is called the solvent.

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