In an acidic medium,nitrobenzene is reduced to aniline as shown in the following reaction: $C_6H_5-NO_2 + 6[H] \rightarrow C_6H_5-NH_2 + 2H_2O$. Which of the following is used as the reducing agent in this reaction?

Identify the major organic product formed from the following reaction sequence:
$CH_3-CH(CH_3)-CO-CH_3 \xrightarrow[(ii) LiAlH_4, (iii) H_2O]{(i) CH_3NH_2} \text{?}$

In the preparation of a $1^{\circ}$-amine from an alkyl halide,with simultaneous addition of one $-CH_2-$ group to the carbon chain,the reagent used as the source of nitrogen is

Select the reagents that reduce nitriles to primary amines:
$A$. $(i) \text{LiAlH}_4$; $(ii) \text{H}_2\text{O}$
$B$. $\text{Sn} + \text{HCl}$
$C$. $\text{H}_2/\text{Ni}$
$D$. $\text{Na(Hg)}/\text{C}_2\text{H}_5\text{OH}$
$E$. $\text{Br}_2/\text{aq. NaOH}$
Choose the correct answer from the options given below:

Which of the following reactions can produce aniline as the main product?

What are $A$ and $B$ in the following reactions?
$A \xrightarrow{H_2 / Ni} R-CH_2-NH_2 \xleftarrow[ii) H_2O]{i) LiAlH_4} B$