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

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 $(H_{2}S{O}_4 and HN{O}_3), HN{O}_3$ acts as

1. Acid

2. Base

3. Acid as well as base

4. Neither acid nor 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

Which of the compounds with molecular formula C₅H₁₀ yields acetone on ozonolysis?

1. 2-methyl-2-butene

2. 2-methyl-1-butene

3.  Cyclopentane

4. 3-methyl-1-butene