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Assertion : Boiling point of p-nitrophen...

Assertion : Boiling point of p-nitrophenol is greater than that of o-nitrophenol.
Reason : There is intramolecular hydrogen bonding in p-nitrophenol and intermolecular hydrogen bonding in o-nitrophenol.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)

C

If Assertion is true statement but Reason is false , then mark (3)

D

If both Assertion and Reason are false statements , then mark (4)

Text Solution

Verified by Experts

The correct Answer is:
D
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o-nitrophenol is

The boiling point of p- nitrophenol is higher than that of o- nitrophenol because.

Assertion: o-nitrophenol has higher boilling point than p-nitrophenol. Reason: Intermolecular hydrogen bonding is present in p-nitrophenol and intrmolecular hydrogen bonding in o-nitrophenol.

o-nitrophenol is more volatile than p-nitrophenol it is due to

Give the structure of p-nitrophenol

Assertion (A) Boiling points of alcohols are higher than ethers. Reason (R) They can form intermolecular hydrogen-bonding.

Assertion: o- and p -nitrophenol can be separated by steam distillation. Reason: o- nitrophenols have intramolecular hydorgen bonding while p -nitrophenols exists as associated molecules.

Assertion: Boiling and melting point of amides are higher than corresponding acids Reason : It is due to strong intermolecular hydrogen bonding in their molention.

Statement I: p-Nitrophenol is a stronger acid than o-nitrophenol. Statement II: Intramolecular hydrogen bonding makes the o-isomer weaker than p-isomer.

Knowledge Check

  • Assertion: o- and p -nitrophenol can be separated by steam distillation. Reason: o- nitrophenols have intramolecular hydorgen bonding while p -nitrophenols exists as associated molecules.

    A
    if both assertioon and reason are true and reason is the corrct explanation of assertion.
    B
    If both assertion and reason are ture but reason is not the corrcet explanation of assertion.
    C
    If assertion is true but reason is false .
    D
    if both assertion and reason are false.

  • p-nitrophenol and o-nitrophenol are separated by:

    A
    distillation
    B
    steam distillation
    C
    crystallization
    D
    fractional crystallization
    • AAKASH INSTITUTE ENGLISH- ALCOHOLS, PHENOLS AND ETHERS-Assignment Section -D (Assertion - reason type question)
    1. Assertion : Boiling point of p-nitrophenol is greater than that of o-n...

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    2. A : When C(2) H(5) - O- CH(3) is reacted with one mole of Hl then C(2...

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    3. A : When 3,3-dimethyl butan - 2 - ol is heated in presence of concentr...

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    4. A : In esterification reaction , HCOOH is the most reactive acid among...

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    5. A : Ethers can't be distilled upto dryness due to fear of explosion . ...

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    6. Phenol is less acidic than........... .

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    7. A : CH(3) - underset(O)underset(||)(C)-COOH gives haloform reaction ...

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    8. A : Diphenyl ether is prepared by Williamson synthesis . R : This...

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    9. A : Grignard's reagent is prepared in the presence of ether . R :...

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    10. A : CH(3) - underset(CH(3))underset(|)overset(CH(3))overset(|)(C)-CH=...

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    11. A : Two moles of Grignard reagent is consumed in the formation of ter...

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    12. A : bond angle in ether is slightly greater than normal tetrahedral an...

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    13. A : CH(3)-underset(CH(3))underset(|)overset(CH(3))overset(|)(C)-O-CH...

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    14. A : Ortho - cresol is weaker acidic than meta-cresol . R : It is d...

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    15. A : Among all ortho halophenol , fluorophenol is least acidic . R ...

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    16. A : In esterification reaction alcohol act as nucleophile . R : ...

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    17. A : Phenol is manufactured by Dow 's pocess. R : It involves the ...

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    18. A : Primary alcohol is prepared by the reaction of primary amine with ...

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    19. A : The reactivity order of alcohols is 1^(@) gt 2^(@) gt 3^(@) for ...

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    20. A : The dehydration of ethyl alcohol in presence of Al(2)O(3) at 633 ...

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