Fehling solution reacts with $HCHO$ to form a precipitate of which color?

What will be the compound $X$ in the given reaction?
$MeO-C_6H_4-CHO + (X) \xrightarrow{CH_3COONa, H_3O^+} MeO-C_6H_4-CH=CHCOOH$

Which reagent is suitable for the following transformation?

Select the option in which the incorrect major product is shown.

Which of the following statements is true regarding the Cannizzaro reaction?

An organic compound $x$ where the molar ratio of $C$, $O$, and $H$ are equal, on treatment with $50\% \ KOH$ under reflux followed by acidification produced $y$. The most likely structure of $y$ is: [Molar mass of $x$ is $58 \ g \ mol^{-1}$]