100 most repeated chemistry gk questions

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 surely help you in your preparation.

More chemistry gk questions 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 questions along with answers in 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? 


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? 


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? 


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 the “milk of magnesia” chemical name?

Magnesium hydroxide

Bronze is an alloy of

Copper and Tin

Which is chiefly present in LPG (Liquefied Petroleum Gas)? 


Which elements are found in the maximum percentage in the human body? 


Bauxite is an alloy of which of the following metals?


Which is abundant in Gobar gas?


Formation of the ozone hole is maximum over which part of the earth?


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?


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?


Which of the following is used in making smoke bombs?


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?


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 


Plaster of Paris is made by partial dehydration of

gypsum salt 

By which process water can be separated from alcohol water mixture?


Which organic compounds has a fruity smell?


What material is used to make an electric heater coil ? 


Vulcanization of rubber is carried out by adding which element?


Which gas is used as a fire extinguisher?

Carbon dioxide

Which is most abundant inert gas in the atmosphere?


Which metal is extracted from seawater? 


What is the use of graphite in nuclear reactors?


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?


What is the chemical name of Aspirin? 

acetylsalicylic acid 

Litmus is obtained from


The tip of the matchstick contains which chemical?

red phosphorus 

Where is National Chemical Laboratory  located ?


How was the question? Are you satisfied with the answer provided? do comment below to help us know your opinion about this collection of questions.

We will add more chemistry gk questions in this blog.

Leave a Comment