Which one of the following tests is given by both aldehydes and ketones?
Correct answer: C. 2, 4 DNPH test
- A. Silver mirror test
- B. Fehling's solution
- C. 2, 4 DNPH test
- D. Benedict's solution test
Explanation
Only aldehydes can react with mild reagents such as Fehling's solution and Benedict's solution and also show positive results with the silver mirror test, whereas 2,4-DNPH reacts with carbonyl compounds (both aldehydes and ketones) to give a colored precipitate.
Last updated
About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
Practise Aldehydes and Ketones
679 free Aldehydes and Ketones MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.