Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Science Chemistry Periodic Table

A compound 'X' upon reaction with H2O produces a colorless gas 'Y' with rotton fish smell. Gas 'Y' is absorbed in a solution of CuSO4 to give Cu3P2 as one of the products. Predict the compound 'X'.

1
As2O3
2
Ca3(PO4)2
3
Ca3P2
4
NH4Cl
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