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Chemistry

Chemistry
The main constituent of biogas is

Oxygen
Methyl alcohol
Acetic acid
Methane

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Chemistry
What is the atomic number of Oxygen

12
8
22
5

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

None of these
Carbon
Oxygen
Hydrogen

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Chemistry
Hydrogen is not found in atmosphere because

It is the lightest gas
It is absorbed by plants
It is highly inflammable
It immediately combines with oxygen to form water

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Chemistry
By-product obtained by soap industry is

Caustic potash
Naphthalene
Glycerol
Caustic soda

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Chemistry
Which is known as carbolic acid?

Ethanol
Acetic acid
Oxalic acid
Phenol

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MORE MCQ ON Chemistry

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