Assertion : Hydrazine contains nitrogen but does not give Lassaigne's test for hydrogen. Reason : Hydrazine reacts with fused sodium to give H_(2) gas.

Assertion : Hydrazine contains nitrogen but does not give Lassaigne's

1.	Assertion : Hydrazine contains nitrogen but does not give Lassaigne's test for hydrogen. Reason : Hydrazine reacts with fused sodium to give H_(2) gas.
Answer» If both assertion and Reason are true, and reason is the true explanation of the assertion. If both assertion and reason are true, but reason is not the true explanation of the assertion. If assertion is true, but reason is false If both assertion and reason are false Solution :Correct explanation. Hydrazine does not CONTAIN carbon. Therefore, NaCN cannot be FORMED which is essential for positive test for NITROGEN.