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NEET • CHEMISTRY • HALOALKANES AND HALO ARENES
Haloalkanes and halo arenes practice · Easy
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Practice format and chapter quiz
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31
Easy
31 of 36
Remembering
+4 | -1
The group of chemicals used as pesticide is
View answer and explanation
Correct option: B
DDT, Aldrin
Option B (DDT, Aldrin) is correct because both DDT (dichlorodiphenyltrichloroethane) and Aldrin are well-known organochlorine pesticides.
32
Easy
32 of 36
Understanding
+4 | -1
reaction on optically active substrates mainly gives :
View answer and explanation
Correct option: C
Racemic product
Option C (Racemic product) is correct because S\N1 reactions proceed through a carbocation intermediate, which is planar and can be attacked from either side, leading to racemization.
33
Easy
33 of 36
Remembering
+4 | -1
The substance employed as tear gas is:
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Correct option: B
Chloropicrin
Option B (Chloropicrin) is correct because chloropicrin () is a known lachrymatory agent used as tear gas.
34
Easy
34 of 36
Application
+4 | -1
The number of stereoisomers of compound
would be:
would be:
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Correct option: D
4
Option D (4) is correct because the compound has one chiral center and exhibits cis/trans isomerism due to the double bond, resulting in 2 x 2 = 4 stereoisomers.
35
Easy
35 of 36
Analyzing
+4 | -1
Chlorine is most reactive towards NaOH in:
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Correct option: D
Option D is correct because benzyl halides are more reactive towards NaOH due to the stability of the benzylic carbocation formed during the reaction.
36
Easy
36 of 36
Application
+4 | -1
A mixture of 1-chloropropane and 2-chloropropane when treated with alcoholic KOH, it gives:
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Correct option: A
1-propene
Option A (1-propene) is correct because alcoholic KOH promotes dehydrohalogenation, leading to the formation of the most stable alkene, which is 1-propene in this case.
Revision notes and key takeaways
Review HALOALKANES AND HALO ARENES in your textbook or class notes, then use this set to check your understanding.
Showing 31-36 of 36 questions