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Chemistry

Chemistry
Basicity of boric acid, H3BO3 is

4
5
2
3

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Chemistry
The 'solid waste' is also known as

Toxic waste
Scrubber
Sludge
Sedge

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Chemistry
The most common cause of pollution of air is

Smoke
Carbon dioxide
Carbon monoxide
Sulphur dioxide

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Chemistry
Acid rain' is caused due to air - pollution by

Nitrous oxide and sulphur dioxide
Carbon monoxide
Methane
Carbon dioxide

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Chemistry
The number of electrons presents in H+ is

one
three
zero
two

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Chemistry
If water smells bad, then that odour can be removed by adding

Alum
Bleach
Activated carbon
Deactivated nitrogen

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MORE MCQ ON Chemistry

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