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Chemistry

Chemistry
When formaldehyde and potassium hydroxide are heated, we get

Methane
Methyl alcohol
Acetylene
Ethyl formate

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Chemistry
The coordination number of body centered atom in cubic structure is

6
10
4
8

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Chemistry
Maximum permissible concentration of total hardness in drinking water is

50
200
500
100

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Chemistry
Which of the following elements is found in all organic compounds

Calcium
Nitrogen
Oxygen
Carbon

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Chemistry
Bleaching action of moist sulphur di-oxide is because of its

Oxidising property
Acidic property
Reducing property
Basic property

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Chemistry
‘Aerosol’ is known as

Green house gas present in air
Microbes, present in air
Suspended solid particles in air
Pollutant gas, present in air

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