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To distinguish between 2-pentanone and 3...

To distinguish between 2-pentanone and 3-pentanone which reagent can be used ?

A

`K_2Cr_2O_7//H_2SO_4`

B

Zn-Hg/HCl

C

`SeO_2`

D

Iodine / NaOH

Text Solution

Verified by Experts

The correct Answer is:
D

Due to presence of active keto-methyl group 2-pentanone will respond to iodoform test, but 3-pentanone does not.
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ERRORLESS-ALDEHYDES AND KETONES-NCERT BASED QUESTIONS(PROPERTIES OF ALDEHYDES AND KETONES)
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  3. To distinguish between 2-pentanone and 3-pentanone which reagent can b...

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  4. Reaction is

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  7. Acetaldehyde and acetone can be distinguished by

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  8. Which compound is soluble in water

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  9. Which gives lactic acid on hydrolysis after reacting with HCN?

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  12. Reaction of butanone with methyl magnesium bromide followed by hydroly...

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  13. The reaction of an aldehyde with hydroxylamine gives a product which i...

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  14. Cannizzaro reaction is not given by

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  15. Acetal is produced by reacting alcohol in the presence of dry HCl with

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  16. Hydrocarbons are formed when aldehydes and ketones are reacted with am...

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  17. Compound (A) undergoes Cannizzaro reaction and (B) undergeos positive ...

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  19. A compound gives a yellow precipitate on warming with iodine and aq. S...

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  20. Which responds to + ve iodoform test ?

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