Which of the following reagent is used to separate and purify carbonyl and non carbonyl compounds?
Correct answer: C. NaHSO3
- A. HCN
- B. BrMgCH3
- C. NaHSO3
- D. H2O
Explanation
Sodium bisulfite reacts selectively with carbonyl compounds to form stable, crystalline bisulfite adducts. Non-carbonyl compounds do not react, allowing easy separation. Regenerating the carbonyl from the adduct gives purified carbonyl compounds.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Aldehydes and Ketones questions
Which reaction converts aldehydes and ketones to alcohols?
Which product is formed when ethanal is treated with HCN?
Which of the following does NOT give a positive Fehling's test?
Mild oxidizing agent among the following is:
C = O and C = C bonds are differentiated by:
Reactivity of carbonyl compounds is due to: