Which of the following is incorrect?
Correct answer: B. NaHSO3 is used in detection of carbonyl compounds
- A. Fehling solution is used in detection of glucose
- B. NaHSO3 is used in detection of carbonyl compounds
- C. FeCl3 is used in detection of phenols
- D. Tollen's reagent is used in detection of Aldehyde
Explanation
The correct answer is: Option B: NaHSO3 is used in detection of carbonyl compounds. This statement is incorrect because NaHSO3 is not primarily utilized for the qualitative detection of carbonyl compounds; it is more commonly used to form derivatives or protect carbonyl groups.Option A is correct as Fehling solution indeed detects reducing sugars like glucose.Option C is correct because FeCl3 is used to detect phenols through a color change.Option D is correct because Tollen's reagent is specific for aldehydes, producing a silver mirror as an indication of their presence.
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 of the following is the correct name of CH3CH2CH2COCH2CHO?
When Phenol reacts with formaldehyde, which of the following product is produced?
Addition product of formaldehyde & ethyl alcohol is:
Acetone reacts with hydrogen cyanide (HCN) to form a cyanohydrin. It is an example of?
When aldehyde reacts with 50 % NaOH this reaction is called _.
Catalytic reduction of aldehyde & Ketone forms: