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:
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12. |
The hardest substance available on earth is |
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:
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14. |
Tetraethyl lead is used as |
A. |
pain killer | B. |
fire extinguisher | C. |
mosquito repellent | D. |
petrol additive |
Answer: Option D
Explanation:
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15. |
Which of the following is used as a lubricant? |
A. |
Graphite | B. |
Silica | C. |
Iron Oxide | D. |
Diamond |
Answer: Option A
Explanation:
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