The isobutyl group among the following is:
 

1.
2.	CH3–CH2–CH2–CH2–
3.
4.

The C – H bond and C – C bond in ethane are formed by overlapping of -

1. ${\mathrm{sp}}^3-\mathrm{s} \mathrm{and} {\mathrm{sp}}^3-{\mathrm{sp}}^3$

2. ${\mathrm{sp}}^2-\mathrm{s} \mathrm{and} {\mathrm{sp}}^2-{\mathrm{sp}}^2$

3. sp – sp and sp – sp 

4. p–s and p – p

The alkene among the following that has the smallest heat of hydrogenation is-

1. ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_3$

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

3. ${\mathrm{CH}}_2=\mathrm{CH}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

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

The correct order of relative rates of hydrogenation of alkenes is:

1. Ethylene > propene > 2-butene > 2-methyl-2-butene

2. 2-methyl-2-butene > 2-butene > Propene > Ethylene

3. 2-butene > propene > ethylene > 2-methyl-2-butene

4. Propene > 2-butene > ethylene > 2-methyl-2-butene

A compound that gives an optically inactive compound on treatment with H₂(2 moles)/ Pt is-

1. 3-Methyl-1-pentyne

2. 4-Methyl-1-hexyne

3. 3-Methyl-1-heptyne

4. None of the above

An alkene among the following that reacts fastest with H₂ under catalytic conditions is -

1.		2.
3.		4.

The number of isomeric sodium salt of acid that will be required to obtain neopentane is-

1. 3                                   

2. 1

3. 4                                                  

4. 6

 ${\mathrm{CH}}_3\mathrm{Cl} \& {\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cl}$ undergoes Wurtz reaction to give-

Hydrocarbon (A) reacts with bromine by substitution reaction to form an alkyl bromide B.
B undergoes the Wurtz reaction to give a gaseous hydrocarbon containing less than four carbon atoms.

The formula of (A) is:

1. $\mathrm{CH}\equiv \mathrm{CH}$
2. ${\mathrm{CH}}_2={\mathrm{CH}}_2$ 
3. ${\mathrm{CH}}_3-{\mathrm{CH}}_3$
4. ${\mathrm{CH}}_4$

Which of the following compounds has the highest melting point?

1. ${\mathrm{C}}_4{\mathrm{H}}_{10}$ $$ $$                                 

2. ${\mathrm{C}}_5{\mathrm{H}}_{12}$

3. ${\mathrm{C}}_6{\mathrm{H}}_{14}$ $$                                  

4. ${\mathrm{C}}_7{\mathrm{H}}_{16}$