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Chemistry

Chemistry
The term 'brown air' is used for

Sulphurous smog
Industrial smog
Acid fumes
Photochemical smog

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Chemistry
How many electrons can be accommodated in d-orbital

3
8
6
10

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Chemistry
The National Chemical Laboratory is situated in

Patna
Pune
Bangalore
New Delhi

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Chemistry
Aquaregia is a mixture of the following in the ratio 1 : 3 by volume

Dil. HCl and dil. HNO3
Conc. HNO3 and conc. HCl
Conc. HCl and conc. HNO3
Conc. HNO3 and conc. H2SO4

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Chemistry
The chief source of naphthalene is

Charcoal
Diesel
Camphor
Coal-tar

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Chemistry
Extensively used nitrogenous fertilizer is

Nitro-lime
Ammonium nitrate
Urea
Ammonium sulphate

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MORE MCQ ON Chemistry

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