Haloalkanes and Haloarenes  MCQs

MCQs of Haloalkanes and Haloarenes

Showing 21 to 30 out of 112 Questions
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21.
The boiling points of haloalkane compounds are higher than haloarene compounds. Why ?
(a) Presence of strong bond because of short C - X bond length.
(b) Presence of strong bond because of long C - X bond length.
(c) Haloarenes are arometic.
(d) Haloarenes possess more carbon than haloalkane.
Answer:

Option (a)

22.
Which one is not a type of stereo chemistry ?
(a) Functional group isomerism
(b) Conformational isomers
(c) Optical isomers
(d) Geometrical isomers
Answer:

Option (a)

23.
The optically active substances which rotate the plane of polarised light towards right hand side are called _____
(a) levo rotatory (l)
(b) dextro rotatory(d)
(c) racemic mixture
(d) asymmetric carbon
Answer:

Option (b)

24.
Which one is Lewis base ?
(a) RCOO:-
(b) : SHΘ
(c) : NH2Θ
(d) All of the given
Answer:

Option (d)

25.
What is the C - Cl bond length in chlorobenzene ?
(a) 169 pm
(b) 177 pm
(c) 196 pm
(d) 167 pm
Answer:

Option (a)

26.
What is hybridization of carbon containing halogen in haloarenes ?
(a) sp
(b) sp3
(c) sp2
(d) dsp2
Answer:

Option (c)

27.
_____ is proved harmful to ozone layer.
(a) CFC
(b) CHCl3
(c) CHI3
(d) DDT
Answer:

Option (a)

28.
Which device is used to measure the magnitude of rotation of the plane of polarised light ?
(a) pH meter
(b) Potentiometer
(c) Spectrometer
(d) Polarimeter
Answer:

Option (d)

29.
The compounds which possess equal mixture of (+) and (-) isomers are called _____
(a) equimolar mixture
(b) racemic mixture
(c) hybrid mixture
(d) homologous mixture
Answer:

Option (b)

30.
The easy method to represent three dimensional structure in two dimension is _____
(a) racemic mixture
(b) van't floff rule
(c) fischer structure
(d) resolution
Answer:

Option (c)

Showing 21 to 30 out of 112 Questions
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