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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| 73. |
The maximum number of covalent formed by nitrogen is |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
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| 74. |
The formula C6H5-CO-CH3 represents |
| A. |
Acetone | | B. |
Acetic acid | | C. |
Acetophenone | | D. |
Phenyl acetate |
Answer: Option D
Explanation:
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| 75. |
The metal that is usually extracted from sea water is |
Answer: Option B
Explanation:
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| 76. |
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called |
| A. |
liquation | B. |
leaching | | C. |
levigation | D. |
magnetic separation |
Answer: Option D
Explanation:
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| 77. |
The inert gases are ____ in water |
| A. |
sparingly soluble | | B. |
insoluble | | C. |
soluble | | D. |
None of these |
Answer: Option C
Explanation:
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| 78. |
The molecular formula of phosphorous is |
Answer: Option A
Explanation:
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