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To distinguish between formaldehyde and ...

To distinguish between formaldehyde and acetaldehyde, we require

A

Tollen's reagent

B

Fehling's solution

C

Schiff's reagent

D

Caustic soda solution

Text Solution

Verified by Experts

The correct Answer is:
D
`2HCHO underset("conc.")overset(NaOH)to CH_3OH+HCOONa`
It is a Cannizzaro’s reaction.
`2CH_3CHO underset("dil.")overset(NaOH)to CH_3-overset(OH)overset(|)(CH)-CH_2-CHO`
It is aldol condensation reaction.
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ERRORLESS-ALDEHYDES AND KETONES-NCERT BASED QUESTIONS(PROPERTIES OF ALDEHYDES AND KETONES)
  1. Which one of the following pairs is not correctly matched

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  2. Which of the following gives aldol condensation reaction

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  3. To distinguish between formaldehyde and acetaldehyde, we require

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  4. Which of the following reagents react differently with HCHO, CH(3)CHO ...

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  5. Which of the following reagents is used to distinguish acetone and ace...

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  6. Which of the following compound is resistant to nucleophilic attack by...

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  7. In which of the following reactions new carbon-carbon bond is not form...

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  8. Contents of three bottles were found to react (i) Neither with Fehli...

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  9. C3H6O did not give a silver mirror with Tollen's reagent, but gave an ...

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  10. An aromatic compound X with molecular formula C(9)H(10)O gives followi...

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  11. Which one of the following does not form sodium bisulphite addition pr...

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  12. Which one of the following undergoes reaction with 50% sodium hydroxid...

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  13. OHC-CHOoverset(OH^(-))toHOH(2)C-COOH. The reaction given is

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  14. The correct order of reactivity of PhMgBr with underset((I))(Ph-unde...

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  15. Claisen condensation is not given by

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  16. Ketones reacting with Mg-Hg over water give

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  17. A compound (A) C(5)H(10) Cl(2) on hydrolysis gives C(5)H(10)O which re...

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  18. With which of the following reagents, carbonyl compound shows addition...

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  19. The product of this reaction is

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  20. Aldehydes that do not undergo aldol condensation are (1) propanal (...

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