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Which one of the following gives iodofor...

Which one of the following gives iodoform test?

A

Formaldehyde

B

Ethyl alcohol

C

Benzyl alcohol

D

Benzaldehyde

Text Solution

Verified by Experts

The correct Answer is:
B
The compound having `alpha`-hydrogen will give iodoform test. Ethyl alcohol and secondary alcohols also give positive iodoform test because by the action of halogens in alkaline medium, they are oxidised to acetaldehyde and methyl ketones respectively.
`CH_3CH_2OH underset(NaOH)overset(I_2)to CH_3CHO underset(NaOH)overset(I_2)to CI_3CHO underset(NaOH)overset(H_2O)to CHI_3+HCOONa`
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ERRORLESS-ALDEHYDES AND KETONES-NCERT BASED QUESTIONS(PROPERTIES OF ALDEHYDES AND KETONES)
  1. Which of the following statements is not correct

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  2. When Grignard reagent reacts with ketone it yields

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  3. Which one of the following gives iodoform test?

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  4. The reagent which does not react with both acetone and benzaldehyde is

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  5. In Clemmensen reduction, carbonyl compound is treated with …….

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  6. A compound does not react with 2,4 di-nitrophenyl hydrazine and Na, co...

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  7. Which one of the following involves nucleophilic addition

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  8. Which one of the following pairs is not correctly matched

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  9. Which of the following gives aldol condensation reaction

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  10. To distinguish between formaldehyde and acetaldehyde, we require

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

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

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

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

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

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

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

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

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

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

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