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Chemistry

Chemistry
Fertiliser having high nitrogen content is :

Urea
Calcium citrate
Ammonium sulphate
Ammonium nitrate

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Chemistry
Earth’s atmosphere is an envelope of gases extending to a height of

100 km
200 km
150 km
300 km

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Chemistry
The chemical name of 'Hypo' commonly used in photography is

Sodium nitrate
Silver nitrate
Sodium thiosulphate
Silver iodide

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Chemistry
Ultra purification of a metal is done by :

Zone melting
Smelting
Leaching
Slugging

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Chemistry
Which among the following is used as a catalyst in the production of high octane fuels?

HNO3
HCl
HF
H2SO4

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Chemistry
Helium is added to the oxygen supply of deep sea divers because it is

Less soluble in blood than nitrogen at high pressure
Less poisonous than nitrogen
Readily miscible with oxygen
Lighter than nitrogen

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MORE MCQ ON Chemistry

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