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Assertion: Alcohols are easily protonate...

Assertion: Alcohols are easily protonated thena phenols.
Reason: Alcohols undergo intermolecular hydrogen bonding due to the presence of highly electornegative oxygen.

A

If both assertion and reason are true and the reason is the correct explanantion of the assertion.

B

If both assertion and reason are true but reason is not the correct explanantion of the asseriton.

C

If assertion is true but reason is false.

D

If assertion if false but reason is ture.

Text Solution

Verified by Experts

The correct Answer is:
B
In phenols, the lone pairs of electron on the oxygen atom are delocalised over the benzene ring due to resonance and hence are not easily availabe for protonation. On the other hand, in alcohols, the lone pairs of electron on oxygen atom are localized due to teh obsence of resonance and hence are easily available for protontion.
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A2Z-ALCOHOLS, PHENOLS AND ETHERS-Section D - Chapter End Test
  1. The compound that reacts faster with Lucas reagent (conc.HCl +ZnCl(2))...

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  2. The-OH group of Methyl alcohol cannot be replaced by chlorine by the t...

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  3. The calcohol which easily reacts with conc. HCI is

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  4. Because of resonance the oxygen atom of -OH group of phenol

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  5. The compound obtained by heating salicylic acid with phenol in the pre...

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  6. When phenol is allowed to react with Br(2) in (i) CS(2) solution and (...

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  7. When rectified spirit and benzene are distilled togther, the first fra...

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  8. Alcohols react with Grignard reagent to form

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  9. The boiling point of methanol is greater than that of Methyl thiol bec...

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  10. Which of the following will not form a yellow precipitate on heating w...

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  11. In Friedel-Crafts acylation, besides AICI(3), the other reactants are

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  12. Which of the following reagents will produce salicyldehyde on reaction...

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  13. In the following reaction A is

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  14. Action of water in the presence of sulphuric acid with the following a...

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  15. In Williamson's syntheis, ethoxyethane is prepared by

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  16. The compound fromed when Ethyl bromide is heated with dry silver oxide...

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  17. The reagent used for the preparation of higher ether from halogenated ...

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  18. Phenol is more reactive than benzene towards electrophilic substitutio...

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  19. Assertion: Primary and secondary alcohols can be distinguished by Vict...

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  20. Assertion: Alcohols are easily protonated thena phenols. Reason: Alc...

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