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Chemistry

Chemistry
What is the covalency of nitrogen in ammonia molecule

4
2
5
3

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Chemistry
Among the fuels given below, the one with highest calorific value is

Natural gas
Coke
Coal
Wood

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Chemistry
What is 'milk of magnesia' chemically?

Magnesium hydroxide
Calcium hydroxide
Sodium bicarbonate
Magnesium carbonate

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Chemistry
The chief source of naphthalene is

Charcoal
Diesel
Camphor
Coal-tar

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Chemistry
The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

positional isomerism
metamerism
chain isomerism
functional group isomerism

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Chemistry
Chemically ‘Quick Silver is known as

Silver
Aluminium
Copper
Mercury

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