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Chemistry

Chemistry
What is the covalency of nitrogen in ammonia molecule

4
3
2
5

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Chemistry
Which among the following is a carbohydrate ?

Turpentine
Hydrogen peroxide
Cane-sugar
Nylon

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

magnetic separation
liquation
levigation
leaching

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Chemistry
Commonly used antiseptic 'Dettol' is a mixture of

Chloroxylenol + terepineol
Phenol + terepineol
O-cresol + terepineol
O-chlorophenoxylenol + terepineol

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Chemistry
Many people died in London in 1952 as result of air pollution producing

Sleet
Fog
Smog
Mist

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Chemistry
The number of hydrogen bonds between guanine and cytosine in DNA is

2
1
4
3

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MORE MCQ ON Chemistry

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