An organic liquid `A` containing `C,H` and `O` has a pleasant odour with a boiling point of `78^(@)C`. On boiling. A with conc. `H_(2)SO_(4)` a colourless gas is produced which decolourises bromine water and alkaline `KMnO_(4)`. One mole of this gas also takes one mole of `H_(2)`. The organic liquid `A` is

An organic compound A containing C, H and O has a pleasant odour with boiling point of 78^(@)C On boiling A with concentrated H_(2)SO_(4) , a colourless gas is produced which decolourises bromine water and alkaline KMnO_(4) . The organic liquid A is

On heating copper turnings with conc. H_(2)SO_(4) , a colourless gas with pungent smell is evolved which decolourises acidified KMnO_(4) solution. Identify the gas.

An organic liquid (A), containing C,H and O with the boiling point 78^(@)C and possessing a rather pleasant odour, or heating with concentrated H_(2)SO_(4) gives a gaseous product (B) with the empirical formaula CH_(2) .(B) decoluourises bromine water as well as alkaline KMnO_(4) solution and takes up one mole of H_(2) (per mole of B)in the presence of finely divided nickel at high temperature (A) and(B) are: