Identify (Z) in the following reaction sequence:

C₂H₅I $\underset{\mathrm{KOH}}{\overset{\mathrm{Alcoholic}}{\to }}$(X) $\underset{}{\overset{{\mathrm{Br}}_2}{\to }}$(Y) $\stackrel{\mathrm{KCN}}{\to }$(Z):

1. CH₃-CH₂-CN     

2. $\underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}-\underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}$

3. $\underset{Br}{\underset{|}{{\mathrm{CH}}_2}}-\underset{\mathrm{CN}}{\underset{|}{{\mathrm{CH}}_2}}$     

4. $\underset{\mathrm{CN}}{\underset{|}{\mathrm{CH}}}=\underset{\mathrm{CN}}{\underset{|}{\mathrm{CH}}}$

The X and Y in the below mentioned reaction are

Arrange the following halides in the decreasing order of S_N1 reactivity:

(I) ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{Cl}$

(II) ${\mathrm{CH}}_2=\mathrm{CHCH}\left(\mathrm{Cl}\right){\mathrm{CH}}_3$

(III) ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CH}\left(\mathrm{Cl}\right){\mathrm{CH}}_3$

1. I > II > III

2. II > I > III

3. II > III > I

4. III > II > I

The product (C) in the below-mentioned reaction is:
\(CH_{3}CH_{2}CH_{2}Br \ \xrightarrow[]{\textbf{KOH(alc.)}} \)
\(\ (A) \ \xrightarrow[]{\textbf{HBr}} \ (B) \ \xrightarrow[]{\textbf{KOH(aq}} \ (C)\)

\(HC\equiv CNa \ + \ Cl-CH_{2}-CH_{2}-CH_{2}-I \ \rightarrow \ (A) \)
The major product (A) in the above reaction is :

1. H-C$\equiv$C-CH₂-CH₂-CH₂-I

2. CH₂=CH-CH₂-I

3. H-C$\equiv$C-CH₂-CH₂-CH₂-Cl

4. CH₂=CH-CH₂-Cl

The set of reagents used to produce freon (CCl₂F₂) are:

Freon (CCl₂F₂) can be produced by:

1. C + F₂ + Cl₂ $\to$

2. CH₃Cl + F₂ $\to$

3. CCl₄ + HF $\stackrel{{\mathrm{SbCl}}_5}{\to }$

4. CCl₄ + F₂ $\to$

The correct sequence of the dipole moment of given alkyl halides is :

1. CH₃F > CH₃Cl > CH₃Br > CH₃I
2. CH₃F < CH₃Cl < CH₃Br < CH₃I
3. CH₃Cl > CH₃F > CH₃Br > CH₃I
4. CH₃Cl > CH₃Br > CH₃F > CH₃I

Select the correct order of boiling points of the given alkyl halides

i. n-Butyl chloride

ii. iso-Butyl chloride

iii. Tertiary butyl chloride

iv. Secondary butyl chloride

1. i > ii > iii > iv

2. i > iii > ii > iv

3. i > ii > iv > iii

4. i > iv > ii > iii

The products (A) and (B) in the below reactions are, respectively:

$1.$ ${\mathrm{POCl}}_3$ $\mathrm{and}$ ${\mathrm{H}}_3{\mathrm{PO}}_3$

$2.$ ${\mathrm{PCl}}_3$ $\mathrm{and}$ ${\mathrm{H}}_3{\mathrm{PO}}_3$

$3.$ ${\mathrm{H}}_3{\mathrm{PO}}_4$ $\mathrm{and}$ ${\mathrm{POCl}}_3$

$4.$ ${\mathrm{H}}_3{\mathrm{PO}}_3$ $\mathrm{and}$ ${\mathrm{POCl}}_3$