A compound ‘X’ upon reaction with H₂O produced a colourless gas ‘Y’ with rotten fish smell. Gas ‘Y’ is absorbed in a solution of CuSO₄ to give Cu₃P₂ as one of the products. Predict the compound ‘X’ (NEET (Odisha)₂₀₁₉)

The road map of given problem is 2 4 3 2 ‘X’ H O ‘Y’ colourless Rotten fish smell CuSO Cu P Product → As compound ‘X’ Products a colourless gas ‘Y’ with rotten fish smell, X can be Ca₃P₂(calcium phosphide). The reaction takes place as follows: Ca₃P₂ + H₂O → Ca(OH)₂ + PH₃ Colourless gas with rotten fish smell. ‘Y’ 3 2 2 4 'Y' 4 3 CuSO S Cu P O P H H →