GK Quiz on Science: Chemistry Set XVIII

GK Quiz on Science: Chemistry Set XVIII, in this set you will find repository of 10 Multiple Choice Questions that will help you to attune and equipped for different competitive examinations as well as academic examinations.

1. The permanent hardness of water appears due to the:

A. Carbonates of calcium and magnesium
B. Bicarbonates of calcium and magnesium
C. Chloride and sulphate of the calcium and magnesium
D. None of these

2. In which of the following carbon is not present?

A. Diamond  
B. Graphite  
C. Coal
D. None of these

3. The heavy water is a type of:

A. Coolant  
B. Moderator
C. Ore
D. Fuel

4. In all bio compounds the most necessary fundamental element is:

A. Nitrogen
B. Oxygen  
C. Carbon
D. Sulphur

5. Which of the following is the most hard?

A. Diamond
B. Glass  
C. Quartz
D. Platinum

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

A. Bituminous
B. Lignite  
C. Peat  
D. Anthracite

7. The ordinary and general type of coke is :

A. Anthracite
B. Lignite  
C. Bituminous
D. Peat

8. The polluted gas emitted from the vehicles is mainly:

A. Carbon dioxide  
B. Carbon monoxide
C. Marsh gas  
D. Nitrogen oxide

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

A. Carbon dioxide  
B. Carbon monoxide
C. Sulphur dioxide  
D. Hydrocarbon

10. Dry ice is:

A. Solid water
B. Solid CO₂
C. Dehydrated ice
D. Solid H₂O₂