Question

22. Which of the following is not a double displacement
reaction:
(a)CuSO4 +H2S → CuS+H2so4
(b) BaCl2+H2SO,=BaSO4 +2HCI
(c) NaOH+HCI → NaCI+H2O
(d) Mg3N2+6H2o=3Mg(OH)2+2NH3​

Answer 1

The answer is D.....

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