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Question

Which of the following compounds have zero oxidation state at carbon?

A
C6H12O6
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B
HCOOH
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C
HCHO
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D
CH4
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Solution

The correct options are
A C6H12O6
C HCHO
Oxidation number of carbon in C6H12O6=2×6126=0
Oxidation number of carbon in HCOOH=2×221=+2
Oxidation number of carbon in HCHO=2×121=0
Oxidation number of carbon in CH4=2×041=4

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