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Chemistry

Chemistry
Vulcanized rubber contains sulphur

7-9%
3-5%
10-15%
0.02

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Chemistry
Number of6.023 × 1020 atoms present in one mole of a gas at STP is

6.023 × 1023
6.023 × 1020
'6.023 × 10–23
'6.023 × 10–20

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Chemistry
Which gas is used as fire extinguisher ?

Carbon monoxide
Carbon dioxide
Sulphur dioxide
Carbon suboxide

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Chemistry
Denatured spirit is ethanol mixed with

Petrol
Pyridine
Kerosene
Water

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Chemistry
The metal present in vitamin B12 is

Fe
Mo
Co
Mg

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

HF
HCl
H2SO4
HNO3

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MORE MCQ ON Chemistry

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