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The pair of species having different mas...

The pair of species having different mass percentage of carbon is

A

`CH_3COOH & C_6H_12O_6`

B

`CH_3COOH & C_2H_5OH`

C

`HCOOCH_3 & HCOOH`

D

`C_2H_5OH "and" CH_3CH_3`

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The correct Answer is:
B, C, D
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