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Chemistry

Chemistry
Total number of naturally occurring elements

110
92
98
62

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Chemistry
The advantage of detergents over soaps is

Detergents could not give much lather
Detergents are soluble in water
Detergents give lather even with hard water
Soaps give lather with only soft water

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Chemistry
Biofertilizers convert nitrogen to ________ .

Ammonia
Nitrates
Nitrogenase
Amino acids

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Chemistry
The reaction intermediate formed during the preparation of diethylether from ethanol by treatment with H2SO4 is

Carbene
Carbanion
Carbocation
Free radical

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Chemistry
In the electroplating of gold, the electrolyte used is

Gold nitrate
Potassium aurocyanide
Gold chloride
Gold sulphate

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Chemistry
The material which can be deformed permanently by heat and pressure is called a

polymer
thermoset
thermoplastic
chemical compound

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MORE MCQ ON Chemistry

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