Direction for: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as
Assertion: \[N{{H}_{2}}\overset{S}{\mathop{\overset{||}{\mathop{C}}\,}}\,-N{{H}_{2}}\] gives-red colour in Lassaignes test. Reason: Compounds having N along with C gives red colour with Lassaignes test.A) If both Assertion: and Reason: are true and the Reason: is the correct explanation of the Assertion:
B) If both Assertion: and Reason: are true but the Reason: is not the correct explanation of the Assertion:
C) If Assertion: is true but Reason: is false
D) If both Assertion: and Reason: are false
Correct Answer: C
Solution :
The compounds in which N and S both the elements are present along with carbon, when subjected to Lassaignes test, give red colour of ferric sulphocyanide. This is because in such case Lassaigne extract contains NaCNS. \[[Ca{{(OH)}_{2}}]\]
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