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Question

Select the correct pair:


A

Nitric acid, oxygen gas

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B

Nitric acid, hydrogen gas

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C

Sulphuric acid, oxygen gas

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D

Sulphuric acid, hydrogen gas

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Solution

The correct option is D

Sulphuric acid, hydrogen gas


The salt 'iron sulphate' suggests that acid used will be sulphuric acid. When metal reacts with acid it gives salt and hydrogen gas.


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