1.

Which of the following series of compounds have same mass percentage of carbon?

Answer»

`CO_(2), CO`
`CH_(4), C_(6)H_(6), C_(2)H_(2)`
`C_(2)H_(2), C_(6)H_(6), C_(10)H_(8)`
`HCHO, CH_(3)COOH, C_(6)H_(12)O_(6)`

Answer :D


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