MCQ
Which of the following react with $NaHS{O_3}$
- A$C{H_3}COC{H_3}$
- B$C{H_3}CHO$
- C$HCHO$
- ✓$All \,of \,these$

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$\mathop {(A)}\limits_{ gives\,\,positive ~\\ iodoform\,Test } \xrightarrow[\begin{subarray}{l} (ii)\,{H^ + },{H_2}O + ~\\ (iii)\,conc.\,{H_2}S{O_4}/\Delta \end{subarray} ]{{{\text{(i) C}}{{\text{H}}_{\text{3}}}{\text{MgBr}}}}(B)\xrightarrow{{{O_3}/Zn,{H_2}O}}$
