What is the order of melting points for the isomeric pentanes?

1. n-Pentane > Isopentane > Neopentane

2. Neopentane > Isopentane > n-Pentane

3. Neopentane > n-Pentane > Isopentane

4. Isopentane > n-Pentane > Neopentane

How many halogen derivatives are possible for $C_2{H}_6$ ?

1. 2

2. 4

3. 6

4. 9

A hydrocarbon has molecular formula $C_8{H}_{12}$. In this hydrocarbon only one $H_2$ molecule can be added. On ozonolysis it gives symmetrical diketone. The hydrocarbon is

1.

2.

3.

4. All of the above

 In which of the following homolytic bond fission takes place.

1. Alkaline hydrolysis of ethyl chloride

2. Addition of HBr to double bond

3. Photochlorination of methane

4. Nitration of benzene

${\mathrm{CH}}_3-\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}-\mathrm{CH}={\mathrm{CH}}_2+\mathrm{HBr}\to \left(\mathrm{Major}\right)$

The compound 'A' is 

1. ${\mathrm{CH}}_3-\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}-{\mathrm{CH}}_2-{\mathrm{CH}}_2-\mathrm{Br}$

2.  ${\mathrm{CH}}_3-\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}-\underset{\hspace{0.17em}\mathrm{Br}}{\underset{|}{\mathrm{CH}}}-{\mathrm{CH}}_3$

3.  ${\mathrm{CH}}_3-\underset{{\mathrm{CH}}_3}{\underset{|}{\stackrel{\mathrm{Br}}{\stackrel{|}{\mathrm{C}}}}}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

4.  $\underset{\hspace{0.17em}\mathrm{Br}}{\underset{|}{{\mathrm{CH}}_2}}-\underset{{\mathrm{CH}}_3}{\underset{|}{\mathrm{CH}}}-{\mathrm{CH}}_2-{\mathrm{CH}}_3$

In the nitrating mixture ( \(\mathrm{H}_2 \mathrm{SO}_4\) and \(\mathrm{HNO}_3\)) , \(\mathrm{HNO}_3\) acts as:

1. An acid
2. A base
3. Both an acid and a base
4. Neither an acid nor a base

The most reactive compound among the following towards electrophilic substitution reaction is:

1.		2.
3.		4.

In the following reaction,

the number of ($\sigma$) bonds present in the product (A) is-

The alkane that gives only one monochloro product on chlorination with $C{l}_2$ in presence of diffused sunlight is -

1. 2,2,-Dimethylbutane

2. Neopentane

3. n-Pentane

4. Isopentane

The most suitable reagent for the following conversion, is:

1.  ${\mathrm{Hg}}^{2+}/{\mathrm{H}}^{+} , {\mathrm{H}}_2\mathrm{O}$

2.  Na/liquid NH₃

3.  H₂, Pd/C, quinoline

4.  Zn/HCl