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Which one of the following gives iodofor...

Which one of the following gives iodoform test?

A

Formaldehyde

B

Ethynol

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.
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ERRORLESS -ALDEHYDES AND KETONES -Ordinary Thinking (Objective Questions) Properties
  1. Aectaldehyde reacts with chlorine to give

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

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  3. Which one of the following gives iodoform test?

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  4. Paraldehyde is :

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  5. Which will not give acetamide on reaction with ammonia

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  6. For C(6)H(5)CHO which of the following is incorrect

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  7. When acetaldehyde is heated with Tollen's reagent which of the followi...

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  8. If formaldehyde and KOH are heated, then we get

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  9. Which of the following products is obtained by the oxidation of propio...

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  10. Benzaldehyde reacts with ammonia to form

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  11. The reagent with which both acetaldehyde and acetone react easily is

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  12. Which compound undergoes iodoform reaction ?

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  13. Which of the following compounds would undergo Cannizzaro's reaction

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  14. Which gives difference between aldehyde and ketone

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  15. C(2) H(5) CHO and (CH(3))(2) CO can be distingushed by testing with

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  16. When CH(3)COCH(3) reacts with CI(2) and NaOH, which of the following ...

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  17. Which of the following gives aldol condensation reaction?

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  18. An aldehyde on oxidation gives

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  19. An important reaction of acetone is auto condensation in presence of c...

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  20. Aldehyde with NH(2)NH(2) forms

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