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In  the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as

(A)If both assertion and reason are true, and reason is the true explanation of the assertion.

(B)If both assertion and reason are true, but reason is not the true explanation of the assertion.

(C) If assertion is true, but reason is false.

(D)If both assertion and reason are false.

Assertion (A). Hydrazine contains nitrogen but does not give Lassaigne’s test for nitrogen.

Reason (R). Hydrazine reacts with fused sodium to give H2 gas.

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(B)If both assertion and reason are true, but reason is not the true explanation of the assertion.

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