Haloalkanes and Haloarenes

AIPMT 2004MCQEasyNot asked in last 5 yrs+4−1

Ques. 1AIPMT 2004

Chloropicrin is obtained by the reaction of

steam on carbon tetrachloride
nitric acid on chlorobenzene
chlorine on picric acid
nitric acid on chloroform

Answer

(4) nitric acid on chloroform

Solution

Chloropicrin is trichloronitromethane, CCl3NO2.

⇒ It is formed when chloroform is heated with concentrated nitric acid (the H of CHCl3 is replaced by -NO2):

CHCl3 + HNO3 CCl3NO2 + H2O

∴ Chloropicrin is obtained by the reaction of nitric acid on chloroform.

Answer: (4)

Out of syllabus

Keep practising — Haloalkanes and Haloarenes

Ques. 2AIPMT 2002

Reactivity order of halides for dehydrohalogenation is

R-F > R-Cl > R-Br > R-I
R-I > R-Br > R-Cl > R-F
R-I > R-Cl > R-Br > R-F
R-F > R-I > R-Br > R-Cl

Ques. 3AIPMT 2001

An organic compound A (C4H9Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is

t-butyl chloride
s-butyl chloride
iso-butyl chloride
n-butyl chloride

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