Toluene is treated with $CrO X_{2} Cl X_{2}$ in $CS X_{2}$ and then hydrolysed with water to give X. Which of the following statements about X are correct?

AX gives a silver mirror with Tollens reagent.
BX gives a red precipitate with Fehling solution.
CX gives a yellow to orange precipitate with 2,4-DNP.
DX undergoes the Cannizzaro reaction with concentrated NaOH.

Answer: A, C, D

Etard's reaction converts toluene to benzaldehyde (X). Benzaldehyde reduces Tollens reagent and forms a 2,4-dinitrophenylhydrazone. It has no alpha hydrogen and gives the Cannizzaro reaction. Aromatic aldehydes do not reduce Fehling solution, so (B) is wrong.

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Toluene is treated with $CrO X_{2} Cl X_{2}$ in $CS X_{2}$ and then hydrolysed with water to give X. Which of the following statements about X are correct?