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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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