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Chemistry

Chemistry
The major constituent of gobar gas is

Butane
Methane
Carbon dioxide
Isobutane

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Chemistry
Spontaneous change is one in there is:

A lowering of free energy
Increase in free energy
A lowering of entropy
An increase in Internal energy

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Chemistry
Sulphur dioxide bleaches colouring matter by :

Decomposition
Oxidation
Dehydration
Reduction

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Chemistry
Inert gases are

Chemically unreactive
Miscible with water
Chemically very active
Not stable

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Chemistry
Iron and manganese present as pollutants in water cannot be removed by________

Lime soda process or manganese zeolite process
Chlorination
Ion exchange process
Oxidation followed by settling and filtration

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Chemistry
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

2 : 16 : 1
1 : 16 : 2
1 : 1 : 1
2 : 16 : 2

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