CBSE Class 12 Chemistry Chapter 10 Important Questions – Free PDF Download
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Important Questions Class 12 Chemistry Chapter 10 – Haloalkanes and Haloarenes
CBSE Class 12 Chemistry Important Questions Chapter 10 – Haloalkanes and Haloarenes
1 Mark Questions
1. Give IUPAC names of following compounds
(i).
(ii).
(iii).
(iv).
(v). 
(vi).
(vii). 
(viii).
(ix).
(x).
Ans.(i). 1, 3- Dibromobutane
(ii). 1- Cholopropan-2-ol
(iii). 2, 3 – Dibromo-1-chloro-3-methylpentane
(iv). 2-Choloro-3-ethyl-2-methyl pentane
(v). 1-Chloro-2-phenylethane
(vi). 1-Chloro-1-phenyl ethane
(vii). 1, 2, 3, 4, 5, 6- hexachlorocyclohexane
(viii). 2, 2- Dihexyl 1, 1, 1-Trichloro ethane
(ix). 4, 4-dibromobiphenyl
(x). 1, 3-Dibromo -3- methyl butane
(2). Give the structures of following.:
(i). 1,3-Dichloro -2-(bromomethyl) propane
(ii). Isobutylchloride
(iii). Ortho bromotoluene
(iv). 1 – Bromo – 4 – chlorobutane
(v). 3 – Bromo – 5 – chloro – 3,5 – dimethyloctane
(vi). 2,3 – Dibromo – 1 – chloro -3- methylpentane
(vii). 2 – Chloro – 3 – ethyl -1, 4- pentadieme
(viii). 2,3 – Dibromo – 1 – chloro -3- methylpentane
(ix). 2 – Chloro – 1 – phemylpropane
(x). Tert – butylchloride
Ans.(i)
(ii).
(iii).
(iv).
(v).
(vi).
(vii).
(viii).
(ix).
(x).
3. Convert
(i). 1 – Butene to 1 — chlorobutane.
Ans. 
(ii). Ethene to ethanol.
Ans. 
(iii). Chlorobenzene to phenol.
Ans. 
(iv). Methyl bromide to acetic acid.
Ans. 
(v). 2- chlorobutane to sec- butyl ethyl ether.
Ans. 
(vi). Chlorobenzene to benzyl chloride.
Ans. 
(vii). Chlorobenzene to Benzene.
Ans. 
(viii). Methane to Ethane.
Ans. 
(ix). Benzene to o- chlorotoluene.
Ans. 
(x). 1- chloropropane to 2- iodopropane.
Ans. 
4. What is lucas reagent?
Ans. A mixture of HCl and anhydrous 
is known as Lucas reagent.
5. Which of the following will show optical is omerism
1 – bromobutane or 2 – bromobutane?
Ans. 
2- bromobutane will be optically active as it has one chiral carbon
.
6. Arrange 
Br, 
Br, 
Br in order of increasing boiling points.
Ans. The order of increasing boiling points is
Boiling point decreases with increase in branching as it reduces the surface area.
7. Give an example of
(a) Fittig reaction
(b) Finkelstein reaction.
Ans. (a) Fittig reaction
(b) Finkelstein reaction
