| Reaction | Product | |
| I. | \[RX+AgCN\] | RNC |
| II. | \[RX+KCN\] | RCN |
| III. | \[RX+KN{{O}_{2}}\] |  |
| IV. | \[RX+AgN{{O}_{2}}\] | \[R-O-N=O\] |
A) I alone
B) I and II
C) III and IV
D) I, II, III and IV
Correct Answer: B
Solution :
Alkali metal nitrites \[(KN{{O}_{2}})\] being ionic, gives alkyl nitrites when reacts with RX. \[RX+KN{{O}_{2}}\xrightarrow{{}}\underset{alkyl\text{ }nitrite}{\mathop{RON=O}}\,+NaX\] However, silver nitrite being covalent, when reacts with RX gives nitroalkane. \[RX+AgN{{O}_{2}}\xrightarrow{{}}\underset{nitroalkane}{\mathop{RN{{O}_{2}}}}\,+AgX\]
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