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Question

When sulphur (S) reacts with oxygen gas (O2), it produces:

A
Basic oxides
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B
Acidic oxides
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C
Amphoteric oxides
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D
A salt
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Solution

The correct option is B Acidic oxides
Non-metals on reaction with oxygen gas give rise to non-metallic oxides. These non-metallic oxides on reaction with H2O give acidic substances. Here, sulphur is a non-metal. It forms SO2 and SO3 which on reaction with water form acids, H2SO3 and H2SO4.

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