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Chemistry

Chemistry
The highest volume of gases in lower atmosphere is comprised of

Nitrogen
Carbon dioxide
Oxygen
Hydrogen

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Chemistry
Alum is used as

A disinfectant
A purifier for water
A fertilizer
An analgesic

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Chemistry
The oxidation number of nickel in K4[Ni(CN)4] is

Zero
8
–4
4

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Chemistry
In a Carbonyl group a carbon atom makes double bond with

None of these
Oxygen
Hydrogen
Carbon

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Chemistry
The chemical used in embalming biological materials is

Formaldehyde in methanol
Gaseous formaldehyde
Formaldehyde in water
Ethylene glycol

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Chemistry
Acid rain is caused by the pollution of environment by

Nitrous oxide and Sulphur dioxide
Carbon monoxide and Carbon dioxide
Ozone and Carbon dioxide
Carbon dioxide and Nitrogen

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MORE MCQ ON Chemistry

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