TOP 100 Question of Chemistry – For SSC, Railway, UPSC,Banking

chemistry gk in one liner

Chemistry Gk in one Liner

Tube light is filled with?    –     Mercury Vapour & Argon

Other name of “FOOL’S GOLD” is?    –   Iron Pyrite

Non-stick coating in utensils is of?      –  TEFLON

Compounds responsible for temporary hardness of water?   –  Bicarbonates of Calcium and Magnesium

Compounds responsible for permanent hardness of water?   – Sulphates and Chlorides of Calcium and Magnesium

Gases used for ripening raw fruits?  – Ethylene & Acetylene

Main ore of Mercury is?   – Cinnabar

Egg shell is made up of?   –  Calcium Carbonate

______ is known as Artificial Silk.    –  Reyon

Water soluble Vitamins    –  B & C

Fat Soluble Vitamins    –  A, D, E & K
Common preservative in food processing industry is?    –  Benzoic Acid

First organic compound synthesized in laboratory & by whom?  –  Urea by Friedrich Wöhler

What blackens silver’s shine?   –  Ozone Gas

Substance used in Cancer treatment?   –  Cobalt – 60

Cobalt is found in?    –  Vitamin B12

Iron is extracted from which ore? – Hematite


Aluminum is extracted from which ore?  – Bauxite

Copper is extracted from which ore?    –  Copper Pyrite
Chemical name of ‘Washing Soda’ is?   –  Sodium Carbonate

Gases used in welding are _______?  –  Acetylene & Oxygen

Gases used by sea divers for breathing are ____?  –  Oxygen & Helium

Best sources for Vitamin D are?   –  Sunlight & Fish liver

Zinc Phosphide is used as?  –  Rat Poison

Fuse wire is made up of ______   –  Lead and Tin

Purest form of Iron is?   – Wrought Iron

Radium is extracted from ______ .  – Pitchblende

Which agent is as ‘seed’ in artificial rain?  –  Silver Iodide

Oxides of metals are ______ .  – Alkaline

During the process of ‘rusting’ , the weight of iron ______ .  –Increases

______ (metal) is liquid at room temperature.    –  Gallium


______ is used to prepare fire proof and water proof clothes.    –  Calcium hydride

Galvanised iron is coated with?   –  Zinc

Chemical name of Chromic Acid is?  –  Chromium trioxide

Which metal is used in Photoelectric cell?  –  Selenium

Barium Hydroxide is also known as?  –  Baryta Water

______ elements are non-metal.  –  Electronegative

__________ is known as heavy water and used in nuclear reactor as moderator.  – Deuterium Oxide (D2O)

Deuterium is ______ of Hydrogen.  –  Isotope

Ozone is _______ of Oxygen.  –  Allotrope

Ammonia (NH3) is synthesized through?  –  Haber’s Process

Chlorine is used to prepare _________  – PVC, Insecticides,

Which catalyst is used for the synthesis of Vanaspati Ghee?   –Nickle (Ni)

Which catalyst is used for the synthesis of Sulphuric Acid by Contact Process?  – Platinum (Pt)

Chemical name of Picric Acid is?  – Tri Nitro Phenol

______ is known as laughing gas?   –  N2O

Chloroform in sunlight forms poisonous gas ________ .  –  Phosgene

Platinum is also called _____ .  –  White Gold

Which material is used in making of safety matches?  –  Red Phosphorous

Nail polish remover contains?  –  Acetone

Which acid is present in Orange?  – Citric Acid

Lead pencil contains _____ .  –Graphite
Which gas is used in filling electric bulbs ______ ?  –  Argon

Lightest metal?  –  Lithium

Acid rain is due to air pollution by?  –  Nitrous Oxide & Sulphur dioxide

Ozone is _______ .  –  Diamagnetic

Petroleum is found in ______ .  –  Sedimentary Rocks

All noble gases are?  –  Colourless and Odourless

The most abundant element in the earth’s crust is ?  –  Oxygen
The lustre of a metal is due to _______ .  –  Presence of free electrons

Which gas is used in fire extinguisher?   –  carbon dioxide


Which gas is used in cigarette lighters?  –  Butane

Biogas chiefly contains ______ . –  Methane

Chemical used as fixer in Photography is ______ .  –  Sodium thiosulphate

Aspirin is ______ .  –  Acetyl Salicylic Acid

_____ is also known as ‘Stranger Gas.’  –  Xenon

Natural rubber is a polymer derived from ______.  –  Isoprene

‘Oil of Vitriol’ is ______ .  –  Sulphuric acid

Paper is chemically _______ .   – Cellulose

Impurity present in ore is ________ .  – Gangue

Which is known as ‘Metal of Future’ ?  – Titanium

Efficiency of the catalyst depends on its?  – Molecular State

Most of the explosions in mines occurs due to mixing of ______ .   – Methane with air

Vinegar is an aqueous solution of ______ .  – Acetic acid

Kerosene is a mixture of _____ .   – Aliphatic hydrocarbons

The important metal used with iron to produce stainless steel is _____ .  – Chromium

Which gas is responsible for the swelling of bread?   – Carbon dioxide

The metal constituent of chlorophyll is _____ .  – Magnesium


Which acid is used for etching glass?   – Hydrofluoric acid (HF)

Paraffin wax is _________ .   – Saturated hydrocarbon

Solder is an alloy of _____ .  –  Tin and Lead

Alum is used as     –   A purifier for water

Nuclear fuel in the sun is ______ .   – Helium

Dead organisms are transformed into petroleum and natural gas ______ .  – Absence of air

Organic Compounds are only soluble in _____ .   – Non-polar solvents.

Which acid is used in soft drinks?   – Carbonic acid (H2CO3)

Which acid is present in Bee Sting?   – Methanoic Acid

Tooth enamel is made up of ______ .   – Calcium Phosphate

The name ‘catalyst’ was given by _____ .   – Berzilius

A polymeric substance used to make parachute is _____ .   – Viscose

What is used to avoid melting of ice?   – Gelatine

Carbon occur in the nature in the purest form as?  – Diamond

Oxidation is defined as —–   – Loss of electrons

In nuclear reactor, chain reaction is controlled by using _____ .  – Cadmium rod

The radioactive element most commonly detected in humans is _____ .   – Potassium – 40

Hydrogen bomb is based on the principle of _____ .  – Nuclear fusion

The ultrapure metal is obtained by _____ .  – Zone refining

Most abundant metal in earth’s crust is ______ .   – Aluminium

Balloons are filled with _____ .  – Helium

The element common to all acids is _____ .  – Hydrogen

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