$\mathrm{}$
X and Y in the above-mentioned reaction are respectively:
1. X = 2–Butyne; Y = 3–Hexyne
2. X = 2-Butyne; Y = 2-Hexyne
3. X = 1-Butyne; Y = 2-Hexyne
4. X = 1-Butyne; Y = 3–Hexyne

HCl with an alkene X reacts in accordance with Markovnikov’s rule to give 1-Chloro-1-methylcyclohexane. The structure of alkene (X) is:

1.		2.
3.	(1) and (2)	4.

2,3-dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?

1. ${\left({\mathrm{CH}}_3\right)}_2\mathrm{CH}-\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}-\mathrm{CH}={\mathrm{CH}}_2$

2. ${\left({\mathrm{CH}}_3\right)}_{3}C-CH=C{H}_2$

3. ${\left({\mathrm{CH}}_3\right)}_{2}C=CH-C{H}_2-C{H}_3$

4. ${\left({\mathrm{CH}}_3\right)}_{2}CH-C{H}_2-CH=C{H}_2$

The reaction of C₆H₅CH =CHCH₃ with HBr produces:

1. \(C_{6} H_{5} \underset{Br}{\underset{\left|\right.}{CH}} CH_{2} CH_{3} \)

2. \(C_{6} H_{5} CH_{2} \underset{Br}{\underset{\left|\right.}{CH}} CH_{3} \) 

3. \(C_{6} H_{5} CH_{2} CH_{2} CH_{2} Br \)

4. 

Above mentioned single molecule is obtained from ozonolysis. The starting cyclic compound is:

1.		2.
3.		4.

Given compounds are as follows:
 

(I)		(II)
(III)

The enthalpy of hydrogenation of these compounds will be in the order as-

The product(s) that are formed when the given compound is treated with Br₂ in the presence of FeBr₃ are:
 

1.		2.	and
3.	and	4.	and

Product Z in the above-mentioned reaction is:

1. $C{H}_3-(C{H}_2{)}_3-O-C{H}_{2}C{H}_3$

2. $(C{H}_3{)}_{2}C{H}_2-O-C{H}_{2}C{H}_3$

3. $C{H}_3(C{H}_2{)}_4-O-C{H}_3$

4. $C{H}_{3}C{H}_2-CH\left(C{H}_3\right)-O-C{H}_{2}C{H}_3$

The isobutyl group among the following is:
 

1.
2.	CH3–CH2–CH2–CH2–
3.
4.

The incorrect IUPAC name among the following is:

1.
2.
3.
4.