When aldehydes or ketones are treated with $C_6H_5-NH-NH_2$ (phenylhydrazine),the product formed is:

The major product of the following reaction is:

Contents of three bottles were found to react as follows:
$(i)$ Neither with Fehling's solution nor with Tollen's reagent
$(ii)$ Only with Tollen's reagent but not with Fehling's solution
$(iii)$ With both Tollen's reagent and Fehling's solution.
If they contained either ethanal,propanone,or benzaldehyde,which bottle contained which?

Which of the following compounds has the highest boiling point?

Which of the following compounds is not formed in the iodoform reaction of acetone?

Which compound is soluble in $H_2O$?