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Question

Which of the following is true regarding decomposition redox reaction?

A
Same element of a single compound undergoes oxidation and reduction.
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B
Different elements of a single compound undergoes oxidation and reduction.
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C
Same element of different compound undergoes oxidation and reduction.
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D
Both a and b
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Solution

The correct option is B Different elements of a single compound undergoes oxidation and reduction.
Definition:
The chemical reactions in which a compound breaks up into two or more simple substances are called decomposition reactions.
Identification of decomposition reaction: Different elements of a single compound undergo oxidation and reduction.
for eg.
2SO3(g)2SO2(g)+O2(g)
Here oxygen undergoes oxidation and sulphur undergoes reduction but both belong to the same compound SO3(g).

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