If you are looking for questions related to chemistry for the competitive exams. You are at the right place, Here we have listed the most repeated Gk question and answer for Chemistry.
Are you an aspirant for the Railways and SSC exams? Then go through this Top 100 chemistry question and answer of GK, it will sure help you in your preparation.
More GK questions and Answers will be added later in this article. You can visit our English Gk question and answer page for the previous year’s most repeated question of all the subjects of GK.
List of Most repeated question along with answer of Chemistry
What is the name of that system which uses radioactivity to decide the period of materials? Carbon dating
Which metals pollute the air of a city with a large number of automobiles? Lead
What is the Chemical name for baking soda? Sodium bicarbonate
Which gases are present under pressure in soft drinks? Carbon dioxide
Which element is commonly used in nuclear for producing electricity by nuclear fission? Uranium
Table salt gets moist during the rainy season. Why? Because sodium chloride contains hygroscopic impurities like magnesium chloride.
Which is used as a lubricant in heavy machines? Graphite
Who developed the Hydrogen Bomb? Edward Teller
Who developed the atom bomb? J. Robert Open Heimer
Galvanization is the : deposition of zinc on iron
Milk tastes sour when kept in the open for sometime due to the formation of which acid? lactic acid
What is “milk of magnesia” chemical name? Magnesium hydroxide
Bronze is an alloy of Copper and Tin
Which is chiefly present in LPG (Liquefied Petroleum Gas)? Butane
Which elements are found in the maximum percentage in the human body ? Oxygen
Bauxite is an alloy of which of the following metals ? Aluminium
Which is abundant in Gobar gas? Methane
Formation of the ozone hole is maximum over which part of earth? Antarctica
What are the fundamental particles present in the nucleus of an atom? Proton and neutron
Which gas is used for artificial fruit ripening of green fruit? Ethylene
PVC is obtained by the polymerisation of which compound? Vinyl chloride
Which is the purest form of iron? Wrought iron
Which metals form an amalgam with other metals? Mercury
Which of the following is used in making smoke bombs? Carbon
German silver is an alloy of which elements? zinc, copper and nickel
What is the chemical name of Tear gas? Carbonyl chloride
Which compounds is commonly used as an antiseptic in mouthwashes and toothpastes? Sodium chloride
Which polymeric substance used for making parachute? Viscose
Which metal used in printing press? It is an alloy of lead and antimony
Sour taste of Coca Cola is due to the presence of which acid? phosphoric acid
Bhopal gas tragedy is associated with leakage of which chemical? methyl isocyanate
Which substance most commonly used as a food preservative? sodium salt of benzoic acid
Alum stops bleeding in minor cuts because of coagulation
Plaster of Paris is made by partial dehydration of gypsum salt
By which process water can be separated from alcohol water mixture? distillation
Which organic compounds has a fruity smell? Ester
What material is used to make an electric heater coil ? Nichrome
Vulcanization of rubber is carried out by adding which element? Sulphur
Which gas is used as a fire extinguisher? Carbon dioxide
Which is most abundant inert gas in the atmosphere? Argon
Which metal is extracted from seawater? Magnesium
What is the use of graphite in nuclear reactors? moderator
Detergents works by which principle of cleaning the surface? surface tension
Ammonia is a mixture of of which element? aluminium powder and ammonium nitrate
What is Aqua regia? It is a 1:3 mixture by volume of conc. nitric acid and cone hydrochloric acid
Zinc sulphide is commonly used for which purpose? rodenticide
What is the chemical name of Aspirin? acetylsalicylic acid
Litmus is obtained from lichen
The tip of the matchstick contains which chemical? red phosphorus
Where is National Chemical Laboratory located ? Pune
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