General Knowledge - General Science

Exercise :: General Science - Elements and Metals

11. 

Bromine is a

A. black solid
B. red liquid
C. colourless gas
D. highly inflammable gas

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

12. 

The hardest substance available on earth is

A. Gold
B. Iron
C. Diamond
D. Platinum

Answer: Option C

Explanation:

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13. 

The variety of coal in which the deposit contains recognisable traces of the original plant material is

A. bitumen
B. anthracite
C. lignite
D. peat

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

14. 

Tetraethyl lead is used as

A. pain killer
B. fire extinguisher
C. mosquito repellent
D. petrol additive

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

15. 

Which of the following is used as a lubricant?

A. Graphite
B. Silica
C. Iron Oxide
D. Diamond

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.




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