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Chemistry

Chemistry
The lightest gas which is non-inflammable is

Oxygen
Hydrogen
Nitrogen
Helium

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Chemistry
Stains of rust on clothes can be removed by :

Oxalic acid
H2O2
Alcohol
Petrol

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Chemistry
'Bhopal gas tragedy' 1984 is related to which gas

Carbon dioxide
Methyl bromide
Aluminium Phosphide
Methyl isocyanate

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Chemistry
Oxide of sulphur present in the atmosphere are washed down by rains to cause :

Eutrophication in lakes
Depletion of fossil fuel reserves
Industrial smog formation
Lowering of pH of soil

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Chemistry
What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ?

The paper ignites
There is a violent explosion.
There is a crackling sound
There is no reaction.

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Chemistry
Which of the following fibres catches fire least ?

Terricot
Rayon
Nylon
Cotton

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MORE MCQ ON Chemistry

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