Chemistry-G.K Question and Answer / Chemistry MCQs Set IV Sample Test,Sample questions

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Question: 
0xygen and Ozone are:

1.Allotropes

2.Isotopes

3.Isomers

4. Isobars

Question: 
A homogeneous mixture of two or more substances in called:

1.Solution

2.Suspension

3.Colloid

4.Metal

Question: 
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

Question: 
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

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

1.Solution

2.Alloy

3.Mixture

4.Colloids

Question: 
 A homogeneous mixture of two or more substances is called:

1.Solution

2.Suspension

3. Colloid

4.Metal

Question: 
 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

Question: 
 The chemical substance which is easily soluble in water:

1.Carbon

2.Nitrogen

3.Ammonia

4.Iodine

Question: 
 The electrolyte employed in the car battery is:

1.Hydrochloric acid

2.Sulphuric acid

3.Nitric acid

4.Distilled water

Question: 
 The maximum density of the water exists at :

1.100°C

2.+ 4°C

3.O°C

4.-4°C

Question: 
Dry ice is:

1.Solid water

2.Solid CO2

3.Dehydrated ice

4.Solid H2O2

Question: 
In all bio compounds the most necessary fundamental element is:

1.Nitrogen

2.Oxygen  

3.Carbon

4.Sulphur

Question: 
In which of the following carbon is not present?

1.Diamond  

2.Graphite  

3.Coal

4.None of these

Question: 
Which of the following metal is the hardest one?

1.Gold

2.Iron

3. Platinum

4.Lead

Question: 
Quartz is composed of:

1.Calcium sulphate

2.Calcium silicate

3. Sodium sulphate

4.Sodium silicate

Question: 
Tear gas is:

1.Ammonia

2.Chlorine

3.Hydrogen chloride

4.Hydrogen sulphide

Question: 
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

Question: 
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

Question: 
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

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

1.Pristle

2.Ramse

3.Shelley

4.Cavendish

Question: 
The gas emancipating through paddy field is :

1.Ethane

2.Methane

3.Nitrogen

4.All of these

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

1.Hydrogen

2.Helium

3. Nitrogen

4.Neon

Question: 
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

Question: 
The heavy water is a type of:

1.Coolant  

2.Moderator

3.Ore

4.Fuel

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

1.Nitrogen

2.Nitrogen oxide

3. Nitrous oxide

4. Nitrous oxide

Question: 
The ordinary and general type of coke is :

1.Anthracite

2. Lignite  

3.Bituminous

4.Peat

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

1.Bituminous

2.Lignite  

3.Peat  

4.Anthracite

Question: 
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

Question: 
The polluted gas emitted from the vehicles is mainly:

1.Carbon dioxide  

2.Carbon monoxide

3.Marsh gas  

4.Nitrogen oxide

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

1.Boiling

2.Diffusion

3.Melting

4. Condensation

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

1.Vaporisation

2.Boiling

3. Freezing

4.Condensation

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

1. Nucleus

2.Metal

3.Atom

4.Molecule

Question: 
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

Question: 
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

Question: 
Usually the coolant which is used as domestic coolant:

1.Neon

2. Ammonia

3.Nitrogen

4.Freon

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

1.Non-metals

2.Metals

3.Metalloids

4.Ions

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

1. Condensation

2.Vaporisation

3. Melting

4.Boiling

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

1.CFC

2.CH4

3.Ozone

4.SO2

Question: 
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)

Question: 
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

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

1.Carbon dioxide  

2.Carbon monoxide

3.Sulphur dioxide  

4.Hydrocarbon

Question: 
Which of the following is a paramagnetic substance?

1.Iron

2.Hydrogen

3.Oxygen

4.Nitrogen,

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

1. H2CO

2.HNO3

3. H2SO4

4.HCl

Question: 
Which of the following is the heaviest metal?

1.Copper

2.Uranium

3.Aluminium

4.Silver

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

1.Oxygen

2.Nitrogen

3. Manganese

4. Silicon

Question: 
Which of the following is the most hard?

1. Diamond

2.Glass  

3.Quartz

4.Platinum

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

1.Fluorine

2.Chlorine

3.Bromine

4.Iodine

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

1.Helium

2.Neon

3.Argon

4.Radon

Question: 
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

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