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JEE CHEMISTRY MCQ: HYDROCARBONS
1
Medium
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Analyzing
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Assertion (A): In the electrophilic substitution of aryl halides, the incoming electrophile gets attached to the meta position.
Reason (R): Aryl halides are moderately deactivating.
Reason (R): Aryl halides are moderately deactivating.
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Correct option: D
R is correct; A is incorrect
Option D is correct because aryl halides are ortho/para directing due to resonance, not meta directing, and the reason that aryl halides are moderately deactivating is correct.
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In benzene, there is a delocalisation of π-electrons. Hence, each π-electron is attached by….carbon nuclei.
Which statement is false?
Assertion (A) In comparison to ethyl chloride, it is not easy to carry outnucleophilic substitution on vinyl chloride.
Reason (R) Vinyl group is an electron donating. If 2-oxopropanal and methanal are obtained by the reductive ozonolysis of compound (A), then the number of -bonds presents in Fischer-Tropsch process is used in the manufacture of:
Reason (R) Vinyl group is an electron donating. If 2-oxopropanal and methanal are obtained by the reductive ozonolysis of compound (A), then the number of -bonds presents in Fischer-Tropsch process is used in the manufacture of:
