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Question

When ferrous sulphide reacts with sulphuric acid, the product obtained has a characteristic odour of:

A
urine
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B
fishy
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C
rotten egg
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D
pleasant
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Solution

The correct option is B rotten egg
When ferrous sulphide reacts with a sulphuric acid, ferrous sulphate and hydrogen sulphide are the products formed. Hydrogen sulfide is the chemical compound with the formula H2S. It is a colourless gas with the characteristic foul odour of rotten eggs.

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