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(A) Lucas reagent is used to distinguish...

(A) Lucas reagent is used to distinguish `1^@ , 2^@` and `36@` alcohols
(R) The role of anhyd. `ZnCl_2` in the Lucas reagent is to weaken the bond between C-O by accepting electron pair from oxygen atom of alcohol

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-ALCOHOLS, PHENOLS AND ETHERS-ETHERS (OBJECTIVE EXERCISE-4)
  1. (A) n-propyl alcohol is prepared from propene by the action of B2H6 f...

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  2. (A) During acid catalysed esterification, oxygen atom of alcohol is pr...

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  3. (A) Lucas reagent is used to distinguish 1^@ , 2^@ and 36@ alcohols ...

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  4. (A) Addition of water to (CH3)2 - C = CH - CH3 gives (CH3)2 - COH - C...

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  5. (A) 1-propanol & 2-propanol can be distinguished by haloform test ...

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  6. (A) Alcohols are acidic in nature but donot react with NaOH solution ...

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  7. (A) The acidity of alcohols follow the order 1^@ gt 2^@ gt 3^@ (R...

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  8. (A) For the reduction of esters in to alcohols Ni//H2 is preferred tha...

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  9. (A) Dichloro carbene acts as electrophile in Reimer-Tiemann reaction. ...

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  10. (A) : Phenols are more acidic than alcohols. (R): Phenoxide ion is m...

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  11. (A) In methanol C-O bond length is 1.42Å, but in phenol, it is 1.36Å. ...

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  12. (A) o-Nitrophenol is less soluble in water than the m- and p-isomers o...

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  13. (A) Phenol undergoes Kolbe's reaction but not ethanol. (R) Phenox...

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  14. (A) Phenols are acidic & react with alkalies like NaOH but do not reac...

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  15. (A) Presence of electron withdrawing groups at p-position, increases t...

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  16. (A) Both phenol and phenoxide ion exhibit resonance, phenoxide ion is ...

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  17. (A) Phenol and benzoic acid are distinguished with NaHCO3 solution ...

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  18. (A) O and p nitro phenols are separated by steam distillation (R)...

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  19. (A) Reimer Tiemann reactions of phenol with chloroform in alkali produ...

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  20. (A): Ethers behave as bases in the presence of mineral acids. (R): O...

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