In the following questions, Statement of assertion (A) is followed by a statement of reason (R). 1. If both assertion and reason are true and the reason is the correct explanation of the assertion, then mark. 2. If both assertion and reason are true but the reason is not the correct explanation of the assertion, then mark. 3. If assertion is true statement but reason is false, then mark. 4. If both assertion and reason are false statements then mark.
Assertion: Alkyl benzene is not prepared by Friedel-Crafts alkylation of benzene. Reason Alkyl halides are less reactive than acyl halides.A) 1
B) 2
C) 3
D) 4
Correct Answer: B
Solution :
Alkyl benzene is not prepared by Friedel-Crafts alkylation because the monoalkyl product undergo alkylation to produce polyalkylated benzene. The reason that acyl halide are more reactive than alkyl halide is also true but reason is not the correct explanation for assertion.
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