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Chemistry

Chemistry
The next higher homologue of C6H14 is

C7H12
C6H12
C7H14
C7H16

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Chemistry
Greenhouse effect is caused by

Carbon monoxide
Nitrogen dioxide
Carbon dioxide
Nitrogen

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Chemistry
What is the chemical symbol of mercury

Mr
Mg
None of these
Hg

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Chemistry
Which of the following is not a method of preparing oxygen?

Decomposition of potassium permanganate
Electrolysis of water
Fractional distillation of liquid air
Decomposition of manganese dioxide

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Chemistry
The aqueous solution of potassium chloride is

A non-electrolyte
A strong electrolyte
Initially weak and then become a strong electrolyte
A weak electrolyte

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Chemistry
The natural resource, known as black gold is

Tin
Platinum
Coal
Lead

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