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:
|
| 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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