The maximum number of covalent formed by nitrogen is
Answer: Option C
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The formula C6H5-CO-CH3 represents
Answer: Option D
The metal that is usually extracted from sea water is
Answer: Option B
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
The inert gases are ____ in water
The molecular formula of phosphorous is
Answer: Option A
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