The product X in the above mentioned reaction is:

1.		2.
3.		4.

1,2-dibromopropane on treatment with X moles of ${\mathrm{NaNH}}_2$ followed by treatment with ethyl bromine gave a pent-2-yne. The value of X is -

1.  1

2.  2

3.  3

4.  4

3-Phenylpropene on reaction with HBr gives (as a major product)-

1. $C_6{H}_{5}CH\left(Br\right)C{H}_2-C{H}_3$

2. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2\mathrm{CH}\left(\mathrm{Br}\right){\mathrm{CH}}_3$

3. ${\mathrm{C}}_6{\mathrm{H}}_4\left(\mathrm{Br}\right) {\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$

4. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Br}$

In the following reaction,

\(\mathrm{ CH_{3}C\equiv CH\xrightarrow[Red \ hot \ iron \ tube]{873 K} \ A}\)

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

The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reaction is:

The major product in the above-mentioned reaction is:

1.
2.
3.
4.

 
Compound A is:

1.		2.
3.		4.

The main product A and B in the above mentioned reaction are respectively- 

1. 

2. 

3. 

4. 

Which of the following alkenes will yield only ketones when treated with ozone?

1.		2.
3.		4.

Which of the following compounds will exhibit the lowest heat of hydrogenation?

1.		2.
3.		4.