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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. Since sulphur is a non-metal. It forms SO2 and SO3 which on reaction with water form acids, H2SO3 and H2SO4 respectively.

S + O2SO2

SO2 + H2OH2SO3


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