Chlorination

Q. 2-Methyl butane on reacting with $B{r}_2$ in presence of sunlight mainly gives:

1. 1-bromo-2-methyl butane
2. 2-bromo-2-methyl butane
3. 2-bromo-3-methyl butane
4. 1-bromo-3-methyl butane

Q.

In each of the following pairs of ions which ion is more stable?

1. I, I, I, I

2. I, I, II, II

3. II, II, I, I

4. II, II, II, II

Q.

A saturated compound C₅H₁₂ on Mono chlorination given only one product. The compound is:

1. n- pentane

2. iso pentane

3. Both a & b

4. Neopentane

Q. Write the correct reactivity order towards photochemical chlorination.
(X) $C{H}_3-C{H}_2-C{H}_2-C{H}_2-C{H}_3$

(Y) $C{H}_3-\stackrel{\stackrel{C{H}_3}{|}}{CH}-C{H}_2-C{H}_3$

(Z) $C{H}_3-\stackrel{\stackrel{C{H}_3}{|}}{\underset{\underset{C{H}_3}{|}}{C}}-H$

(W) $C{H}_3-C{H}_3$

1. X > Y > Z > W
2. Z > Y > X > W
3. X > Z > W > Y
4. Z > W > Y > X

Q.

A pair of stereoisomers might be classified in various ways. Which of the following statement are true with respect to pairs of stereoisomers?
(a) They might be configurational isomers
(b) They might be diastereomers
(c) They might be constitutional isomers
(d) They might be tautomers
(e) They might be conformational isomers
(f) They might be enantiomers
(g) They might be positional isomers

1. a, b, c, d

2. b, d, e, f, g

3. a, b, f

4. a, b, c, f

Q. Which of the following alkane(s) on halogenation gives only only one monohalogenated product?

1. n-butane
2. 2-methylbutane
3. 2, 2-dimethylpropane
4. Cyclopentane

Q. For the given reaction :
$C{H}_4+C{l}_2\stackrel{h\nu }{⟶}C{H}_{3}Cl+HCl$
To obtain high yields of $C{H}_{3}Cl$ , the ratio of $C{H}_4$ to $C{l}_2$ must be:

1. High
2. Low
3. Equal
4. Does not depend on the ratio.

Q. An alkane (molecular weight 72) forms only one monochlorinated product. Its formula is

1. $(C{H}_3{)}_{4}C$
2. $C{H}_3(C{H}_2{)}_{3}C{H}_3$
3. $(C{H}_3{)}_{2}CHC{H}_{2}C{H}_3$
4. 

Q.

Select the pair of compounds that exhibit cis-trans (geometric) isomerism:

1. Fumaric acid and maleic acid

2. Malonic acid and succinic acid

3. Lactic acid and tartaric acid

4. Acetic acid and crotonic acid

Q.

Which of the following is not formed by the reaction of Cl₂ on CH₄ in sunlight

1. CHCl₃

2. CH₃Cl

3. CH₃CH₃

4. CH₂Cl₂

Q. Of the five isomeric hexanes, the isomer which can give two monochlorinated compounds is

1. n-hexane
2. 2, 3-dimethylbutane
3. 2, 2-dimethylbutane
4. 2-methylpentane

Q. For the given reaction :
$C{H}_4+C{l}_2\stackrel{h\nu }{⟶}C{H}_{3}Cl+HCl$
To obtain high yields of $C{H}_{3}Cl$ , the ratio of $C{H}_4$ to $C{l}_2$ must be:

1. High
2. Low
3. Equal
4. Does not depend on the ratio.

Q. The maximum number of isomers (including stereoisomers) that are possible on mono-chlorination of the following compound is ___: