Advertisements
Advertisements
Question
Which of the following tests/reactions is given by aldehydes as well as ketones?
Options
Fehling’s test
Tollen’s test
2, 4 DNP test
Cannizzaro reaction
Advertisements
Solution
2, 4 DNP test
Explanation:
Fehling’s, Tollen’s and Cannizzaro reaction is shown by alcohol only.
APPEARS IN
RELATED QUESTIONS
Give a simple chemical test to distinguish between the following pair of compounds:
Benzoic acid and Ethyl benzoate
An organic compound contains 69.77% carbon, 11.63% hydrogen and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollens’ reagent but forms an addition compound with sodium hydrogensulphite and give positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acid. Write the possible structure of the compound.
Complete the synthesis by giving missing starting material, reagent or product.

Fehilng's test is positive for
The major products formed in the following reaction sequence A and B are:

An organic compound neither reacts with neutral ferric chloride solution nor with Fehling solution. It however, reacts with Grignard reagent and gives positive iodoform test. The compound is:
The correct set of products obtained in the following reactions:
- \[\ce{RCN ->[reduction]}\]
- \[\ce{RCN ->[(i) CH3MgBr][(ii) H2O]}\]
- \[\ce{RNC ->[hydrolysis]}\]
- \[\ce{RNH2 ->[HNO2]}\]
An organic compound 'A' with the molecular formula C4H8O2 undergoes acid hydrolysis to form two compounds 'B' and 'C'. Oxidation of 'C' with acidified potassium permanganate also produces 'B'. Sodium salt of 'B' on heating with soda lime gives methane.
- Identify 'A', 'B' and 'C'.
- Out of 'B' and 'C', which will have higher boiling point? Give reason.
Benzaldehyde is obtained from Rosenmund’s reduction of:
Fehling’s solution ‘A’ is ______.
