Aldehydes and Ketones MCQs

Correct answer C. Methanol and sodium methanoate

Correct answer D. 3-Hydroxybutanal

Correct answer B. Methanal

Correct answer C. Propanone

Correct answer B. Propanal

Correct answer D. [Ag(NH₃)₂]⁺

Correct answer A. 2,4-Dinitrophenylhydrazine

Correct answer D. Propanal

Correct answer A. Butanone

Correct answer B. sp², with bond angles of about 120°

Correct answer A. Aldehydes have less steric hindrance and fewer electron-donating alkyl groups

Correct answer D. Methanal

Correct answer B. Two molecules of ethanal

Correct answer C. Distil off the aldehyde as soon as it forms

Correct answer A. By passing methanol vapour and air over a heated silver or copper catalyst

Correct answer D. To produce CN⁻ ions, the actual nucleophile

Correct answer C. Protonation of the carbonyl oxygen