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Chemistry

Chemistry
Percentage of lead in lead pencils is

31-66
80
40

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Chemistry
Sour taste of ‘Coca Cola’ is due to the presence of

Acetic acid
Formic acid
Phosphoric acid
Hydrochloric acid

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Chemistry
How many neutrons does iron have

8
13
26
30

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Chemistry
The Bhopal gas tragedy was caused by the gas

Methyl Iso Cyanide
Methyl Cyanide
Methyl chloride
Methyl Iso Cyanate

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Chemistry
The quality of petrol is expressed in terms of

Octane number
Gold number
Added unlead compounds
Cetane number

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Chemistry
The depletion of Ozone layer is mainly due to

Volcanic eruptions
Chlorofluorocarbons
Radioactive rays
Aviation fuels

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MORE MCQ ON Chemistry

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