Z in the below reaction sequence will be:
\(CH_3CH_2Cl \)\(\xrightarrow[]{NaCN}\ X\ \)\(\xrightarrow[]{Ni/H_2}\ Y \ \)\(\xrightarrow{Ac_2O}\ Z\)
1. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{NHCOCH}_3 \)
2. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{NH}_2 \)
3. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CONHCH}_3 \)
4. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CONHCOCH}_3\)

The final compound 'B' in the below reaction is:

1.		2.
3.		4.

Alkyl isocyanide on hydrolysis produces: 

Cyanoform is a _____ acid than chloroform. 

1. Weaker

2. Neutral

3. Stronger

4. Both acidic and basic