Select the reagents that reduce nitriles to primary amines.
A. (i) $\mathrm{LiAlH}_4$; (ii) $\mathrm{H}_2 \mathrm{O}$
B. $\mathrm{Sn}+\mathrm{HCl}$
C. $\mathrm{H}_2 / \mathrm{Ni}$
D. $\mathrm{Na}(\mathrm{Hg}) / \mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}$
E. $\mathrm{Br}_2 / \mathrm{aq} . \mathrm{NaOH}$
Choose the correct answer from the options given below.
$$ \text { Match List I with List II : } $$
| List I (Transition metal/compound/ complex) |
List II (Catalytic Role) |
||
|---|---|---|---|
| A. | $$\mathrm{V}_2 \mathrm{O}_5$$ | I. | Preparation of ammonia from $\mathrm{N}_2 / \mathrm{H}_2$ mixture |
| B. | Fe | II. | Polymerisation of alkynes |
| C. | $\mathrm{PdCl}_2$ | III. | Preparation of $\mathrm{H}_2 \mathrm{SO}_4$ and $\mathrm{SO}_2$ |
| D. | Ni complex | IV. | Oxidation of ethyne to ethanal |
Consider the following reaction :
$$ \begin{aligned} & 2 \mathrm{~A}(\mathrm{~g})+\mathrm{B}(\mathrm{~g}) \rightarrow 2 \mathrm{D}(\mathrm{~g}) \\ & \Delta \mathrm{U}^{\ominus}=-10 \mathrm{~kJ} \mathrm{~mol}^{-1} \text { and } \Delta \mathrm{S}^{\ominus}=-44 \mathrm{JK}^{-1} \text { at } 298 \mathrm{~K} . \end{aligned} $$
Identify the correct option with $\Delta \mathrm{G}^{\ominus}$ for the reaction and spontaneity of the reaction at 298 K .
(Given : $\mathrm{R}=8.31 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}$ )
$$ \text { Match List I with List II : } $$
| List I (Quantum Numbers) |
List II (Orbital) | |||
|---|---|---|---|---|
| 'n' | 'I' | |||
| A. | 2 | 1 | I. | 3d |
| B. | 4 | 0 | II. | 2p |
| C. | 5 | 3 | III. | 4s |
| D. | 3 | 2 | IV. | 5f |
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