R4RIN – MCQs, Mock Tests | Chemistry G.K Question and Answer

Which of the following metal is the hardest one?

1. Gold
2. Iron
3. Platinum
4. Lead

✅ Correct Answer: 3

The gas emancipating through paddy field is :

1. Ethane
2. Methane
3. Nitrogen
4. All of these

✅ Correct Answer: 2

Which of the following is the heaviest metal?

1. Copper
2. Uranium
3. Aluminium
4. Silver

✅ Correct Answer: 2

The colours of the fire crackers are extracted from the elements of the salt of:

1. Zn and S
2. K and Hg
3. Sr and Ba
4. Cr and Ni

✅ Correct Answer: 3

The maximum density of the water exists at :

1. 100°C
2. + 4°C
3. O°C
4. -4°C

✅ Correct Answer: 2

The boiling point and freezing point of the water on mixing edible salt would:

1. Increase
2. Increase and then decrease
3. Decrease
4. Decrease and then increase

✅ Correct Answer: 3

The permanent hardness of water appears due to the:

1. Carbonates of calcium and magnesium
2. Bicarbonates of calcium and magnesium
3. Chloride and sulphate of the calcium and magnesium
4. None of these

✅ Correct Answer: 3

In which of the following carbon is not present?

1. Diamond
2. Graphite
3. Coal
4. None of these

✅ Correct Answer: 2

The heavy water is a type of:

1. Coolant
2. Moderator
3. Ore
4. Fuel

✅ Correct Answer: 3

In all bio compounds the most necessary fundamental element is:

1. Nitrogen
2. Oxygen
3. Carbon
4. Sulphur

✅ Correct Answer: 4

Which of the following is the most hard?

1. Diamond
2. Glass
3. Quartz
4. Platinum

✅ Correct Answer: 1

The percentage content of carbon is more than other coal in:

1. Bituminous
2. Lignite
3. Peat
4. Anthracite

✅ Correct Answer: 4

The ordinary and general type of coke is :

1. Anthracite
2. Lignite
3. Bituminous
4. Peat

✅ Correct Answer: 3

The polluted gas emitted from the vehicles is mainly:

1. Carbon dioxide
2. Carbon monoxide
3. Marsh gas
4. Nitrogen oxide

✅ Correct Answer: 2

Which of the following gas pollutes the most to the air?

1. Carbon dioxide
2. Carbon monoxide
3. Sulphur dioxide
4. Hydrocarbon

✅ Correct Answer: 2

Dry ice is:

1. Solid water
2. Solid CO2
3. Dehydrated ice
4. Solid H2O2

✅ Correct Answer: 2

Quartz is composed of:

1. Calcium sulphate
2. Calcium silicate
3. Sodium sulphate
4. Sodium silicate

✅ Correct Answer: 2

The laughing gas utilized in the form of anaesthesia by the doctors is:

1. Nitrogen
2. Nitrogen oxide
3. Nitrous oxide
4. Nitrous oxide

✅ Correct Answer: 3

The chemical substance which is easily soluble in water:

1. Carbon
2. Nitrogen
3. Ammonia
4. Iodine

✅ Correct Answer: 3

Usually the coolant which is used as domestic coolant:

1. Neon
2. Ammonia
3. Nitrogen
4. Freon

✅ Correct Answer: 2

Tear gas is:

1. Ammonia
2. Chlorine
3. Hydrogen chloride
4. Hydrogen sulphide

✅ Correct Answer: 2

Which of the following is the most abundantly occurring element in the earth-crust?

1. Oxygen
2. Nitrogen
3. Manganese
4. Silicon

✅ Correct Answer: 1

Which of the following is a paramagnetic substance?

1. Iron
2. Hydrogen
3. Oxygen
4. Nitrogen,

✅ Correct Answer: 3

0xygen and Ozone are:

1. Allotropes
2. Isotopes
3. Isomers
4. Isobars

✅ Correct Answer: 1

Which of the following when passes through the alkaline solution of the pyrogalol then ground nut coloured solution is formed?

1. Oxygen
2. Nitrogen
3. Hydrogen
4. Carbon dioxide

✅ Correct Answer: 1

Which of the following gas is directly respondent for the depletion of ozone layer?

1. Carbon dioxide
2. Carbon monoxide
3. Nitrous oxide
4. Chlorofluorocarbon (CFC)

✅ Correct Answer: 4

Which of the following gas is directly respondent for the acid rain in the atmosphere?

1. CFC
2. CH4
3. Ozone
4. SO2

✅ Correct Answer: 4

Which of the following is assumed to be the most fundamental chemical in the chemical industry?

1. H2CO
2. HNO3
3. H2SO4
4. HCl

✅ Correct Answer: 3

The electrolyte employed in the car battery is:

1. Hydrochloric acid
2. Sulphuric acid
3. Nitric acid
4. Distilled water

✅ Correct Answer: 2

Through the reaction of sugar and sulphuric acid which of the following is obtained in its pure form:

1. Water
2. Carbon
3. Oxygen
4. Hydrogen

✅ Correct Answer: 2

Which of the following is the most reactive among the halogens?

1. Fluorine
2. Chlorine
3. Bromine
4. Iodine

✅ Correct Answer: 1

Which of the following noble gas doesn't exist in the air?

1. Helium
2. Neon
3. Argon
4. Radon

✅ Correct Answer: 3

The contribution of the invention of the inert gases goes to:

1. Pristle
2. Ramse
3. Shelley
4. Cavendish

✅ Correct Answer: 2

The gas utilized to fill up the tyres of the aircraft is:

1. Hydrogen
2. Helium
3. Nitrogen
4. Neon

✅ Correct Answer: 2

Which of the following gas is utilized to fill up the balloon, especially when weather related prediction and reporting is to be done?

1. O2
2. CO2
3. CH4
4. He

✅ Correct Answer: 4

The gases employed for the respiratory activities of sailors (divers) are:

1. Oxygen and Nitrogen
2. Oxygen and Helium
3. Oxygen and Argon
4. Oxygen and Neon

✅ Correct Answer: 2

The spreading out and mixing of a substance with another substance due to motion of its particles is called:

1. Diffusion
2. Vaporisation
3. Condensation
4. Heating

✅ Correct Answer: 1

The process by which solid substance changes into liquid is called:

1. Boiling
2. Diffusion
3. Melting
4. Condensation

✅ Correct Answer: 3

The process in which a liquid substance change into gas rapidly on heating is called:

1. Vaporisation
2. Boiling
3. Freezing
4. Condensation

✅ Correct Answer: 2

What is the process called in which gas is changed into liquid by cooling?

1. Condensation
2. Vaporisation
3. Melting
4. Boiling

✅ Correct Answer: 1

The changing of a solid directly into vapours on heating, and of vapours into solid on cooling is called:

1. Diffusion
2. Condensation
3. Vaporisation
4. Sublimation

✅ Correct Answer: 4

A substance which cannot be split up into two or more simpler substances by the usual chemical methods of applying heat, light or electric energy is called:

1. Element
2. Atom
3. Nucleus
4. Matter

✅ Correct Answer: 1

What is an element that is malleable and ductile, and conducts electricity called?

1. Non-metals
2. Metals
3. Metalloids
4. Ions

✅ Correct Answer: 2

An elements that is neither malleable nor ductile, and does not conduct electricity is called:

1. Solution
2. Alloy
3. Mixture
4. Colloids

✅ Correct Answer: 3

A substance made up of two or more elements chemically combined in a fixed proportion by mass is called:

1. Mixture
2. Compound
3. Solution
4. Suspension

✅ Correct Answer: 2

A homogeneous mixture of two or more substances in called:

1. Solution
2. Suspension
3. Colloid
4. Metal

✅ Correct Answer: 1

A homogeneous mixture of two or more substances is called:

1. Solution
2. Suspension
3. Colloid
4. Metal

✅ Correct Answer: 1

A kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions is called:

1. Suspension
2. Suspension
3. Solution
4. Alloy

✅ Correct Answer: 2

The smallest particle of an element that can take part in a chemical reaction is called:

1. Nucleus
2. Metal
3. Atom
4. Molecule

✅ Correct Answer: 3

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G.K Question and Answer - Chemistry MCQs Set IV