General Knowledge - Chemistry
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Exercise"The secret to creativity is knowing how to hide your sources."
- Albert Einstein
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| 19. |
The most abundant rare gas in the atmosphere is |
Answer: Option E
Explanation:
No answer description available for this question. Let us discuss.
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| 20. |
The Latin word formica means ant. The name formic acid is derived from this Latin word because |
| A. |
this acid, in ancient times, was used to eliminate ant-hills | | B. |
this corrosive acid is secreted by ants to drive away their enemies | | C. |
this acid was first obtained by the distillation of ants | | D. |
ants are attracted by the odour of this acid |
Answer: Option E
Explanation:
No answer description available for this question. Let us discuss.
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| 21. |
The ore which is found in abundance in India is |
| A. |
monazite | B. |
fluorspar | | C. |
bauxite | D. |
magnetite |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
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| 22. |
The inherited traits of an organism are controlled by |
| A. |
RNA molecules | | B. |
nucleotides | | C. |
DNA molecules | | D. |
enzymes |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
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| 23. |
The heat energy produced when the human body metabolises 1 gram of fat is |
Answer: Option E
Explanation:
No answer description available for this question. Let us discuss.
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| 24. |
What are the number of moles of CO2 which contains 16 g of oxygen? |
| A. |
0.5 mole | | B. |
0.2 mole | | C. |
0.4 mole | | D. |
0.25 mole |
Answer: Option D
Explanation:
One mole of CO2 has mass of 44 g and 32 g of O2. So 16 g of O2 have 22 g of CO2 or 0.5 moles of it.
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