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Chemistry

Chemistry
Which of the following gases is most toxic ?

Carbon dioxide
Chlorine
Sulphur dioxide
Carbon monoxide

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Chemistry
The material used in the manufacture of lead pencil is

Mica
Graphite
Carbon
Lead

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Chemistry
What is the maximum Water Vapour content in the atmosphere?

4 to 5 per cent
5 to 6 per cent
2 to 3 per cent
3 to 4 per cent

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Chemistry
The ore which is found in abundance in India is

magnetite
bauxite
monazite
fluorspar

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Chemistry
Williamson's synthesis is widely used in the laboratory preparation of

Aldehydes
Ethers
Esters
Alcohols

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Chemistry
The third shell of an atom can have a maximum of ______ electrons

15
18
13
21

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MORE MCQ ON Chemistry

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