An organic compound 'A' on heating with concentrated `H_(2)SO_(4)` forms a compound 'B' which on addition of one mole of hydrogen in presence of Ni forms a compound 'C'. One mole of compound 'C' on combustion forms two moles of `CO_(2)` and three moles of `H_(2)O`. Which of the following represents the compound 'C' ?
A
`C_2 H_6` a saturated hydrocarbon
B
`C_2 H_4` an unsaturated hydrocarbon
C
`HCOOH`, an unsaturated acid
D
`C_2 H_5 OH` , a saturated alcohol
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A
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