The active ion in Tollen's reagent is

What products are formed on the reaction of $Propanal$ with $2-Methylpropanal$ in the presence of $NaOH$? Write the name of the reaction.

The major product formed in the following reaction is:

The light yellow compound produced when acetone reacts with iodine and alkali is:

Which of the following cannot be obtained by the reduction of an aldehyde or a ketone using $NaBH_4$ or $LiAlH_4$?

Given below are two statements:
Statement $I$: $H_2N-CO-CH_2-CH_2-CO-CH_3$ under Clemmensen reduction conditions will give $HOOC-(CH_2)_3-CH_3$.
Statement $II$: $CH_3-CH(CH_3)-CH_2-CH(Cl)-CO-CH_3$ under Wolff-Kishner reduction conditions will give $CH_3-CH(CH_3)-CH_2-CH(Cl)-CH_2-CH_3$.
In the light of the above statements,choose the correct answer from the options given below: