MCQ
Which of the following is correct for the reaction ?


- A$A$ is cyanohydrin
- BNucleophilic-addition reaction
- CThe above reaction is not shown by alkenes
- ✓All of these


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Reason : Conc. $HNO_3$ reacts with metal and first produces a metal nitrate and nascent hydrogen. The nascent hydrogen then further reduces $HNO_3$ to $NO_2$.