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In Lucas test of alcohols, appearance of...

In Lucas test of alcohols, appearance of cloudiness is due to the formation of

A

aldehydes

B

ketones

C

acid chlorides

D

alkyl chlorides

Text Solution

Verified by Experts

The correct Answer is:
D
`R-OH+HCl overset(ZnCl_(2)) rarr R-Cl +H_(2)O`
(conc. `HCl +ZnCl_(2) rarr "Lucas reagent"`)
`3^(@)" alcohol "+"Lucas reagent"rarr "Cloudiness appears immediately"`
`2^(@)"alcohol"+"Lucas reagent" rarr"Cloudiness appears after 5 min."`
`1^(@) "alcohol"+"Lucas reagent"rarr"Cloudiness appears after heating."`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ALCOHOLS, PHENOLS AND ETHERS-PRACTICE EXERCISE (Exercise 1 (TOPICAL PROBLEMS))
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  2. In the manufacture of ethanol from sugar, the enzymes used are

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  3. In Lucas test of alcohols, appearance of cloudiness is due to the form...

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  4. The reactant (X) used in the following reaction is methyl magnesium br...

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  5. The order for the acidic strength of 1^(@),2^(@),3^(@) alcohols, H(2)O...

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  6. Which of the following are benzylic alcohols I C(6)H(5)-CH(2)-CH(2)O...

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  7. CO+H(2)underset(573K//300atm)overset(X("catalayst"))(rarr)CH(3)OH, the...

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  8. CH(3)CH(2)OH can be converted into CH(3)CHO by........... .

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  9. An allcohol gave Lucas test in about 5 minutes. When the alcohol was t...

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  10. CH(2)OH.CH(2)OH on heating with periodic acid gives

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  11. In the reaction given below, the product C is CaC(2)overset(H(2)O)ra...

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  12. The order or reactivity of the following alcohols is

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  13. Which one of the following will most readily be dehydrated in acidic c...

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  14. Reaction of ROH with R'MgX produces

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  15. In which of the following molecules, the cleavage by HlO(4) is not obs...

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  16. Which of the following reactions is not reversible ?

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  17. Among the following ethers, which one will produce methyl alcohol on t...

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  18. Ester formation from CH(3)COOH takes place to maximum extent when alco...

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  19. C(4)H(10)O gives white precipitate immediately with conc. HCl in the p...

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  20. Which of the following combination can be used to synthesise ethanol?

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