Home
Class 12
CHEMISTRY
Assertion (A) : Presence of a nitro grou...

Assertion (A) : Presence of a nitro group at ortho-or para- position increases reactivity of haloarenes towards nucleophilic substitution.
Reason (R) : Nitro group, being an electron withdrawing group decreases the electron density over the bvenzene ring.

A

(A) and (R) both are correct statement and (R) is correct explanation for (A)

B

(A) and (R) both are correct statement but (R) is not correct explanation for (A)

C

(A) is correct statement but (R) is wrong statement.

D

(A) and (R) both are incorrect statement.

Text Solution

Verified by Experts

The correct Answer is:
A

Hint: Reason is correct explanation of assertion.
Promotional Banner

Topper's Solved these Questions

  • HALOAKANES AND HALOARENES

    CHHAYA PUBLICATION|Exercise Solved NCERT Examplar Problems: Long Answer Type|3 Videos
  • HALOAKANES AND HALOARENES

    CHHAYA PUBLICATION|Exercise MCQ Hotspot (Single correct type)|42 Videos
  • HALOAKANES AND HALOARENES

    CHHAYA PUBLICATION|Exercise Solved NCERT Examplar Problems: Matching type|6 Videos
  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 6|10 Videos
  • HYDROCARBONS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 13|16 Videos

Similar Questions

Explore conceptually related problems

Tendency of nucleophilic substitution reaction __________with increase in the no. Of electron -attracting group in halobenzene.

-NO_2 group …………electron density at meta-position of the ring.

Although chlorine is an electron-withdrawing group, yet it is ortho-, para-directing in electrophilic aromatic substitution reactions. Why?

Although chlorine is an electron withdrawing group, yet it is ortho-, para- directing in electrophilllic aromatic subsititution reactions. Why?

Assertion (A) : In monohaloarenes, further electrophilic substitution occurs at ortho- and para- position. Reason (R) : Halogen atom is a ring deactivator.

Explain the fact that in aryl alkyl ethers (i) the alkoxy group activates the benzene ring towards electrophilic substitution and (ii) it directs the incoming substituents to ortho and para positions in benzene ring.

-NH_2 group …………electron density at ortho-/para-positions of the ring.

Although chlorine is an electron withdrawing group, yet it is ortho-, para- directing in electrophilllic aromatic subsititution reactions. Explain why it is so?

Assertion (A) p-nitrophenol is more acidic than phenol. Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.

This question has statement I and Statement II . Of the four choices given after the statements, choose the one that best describes the two Statements. Statement-I:Ethyl chloride is more reactive than vinyl chloride towards nucleophilic substitution reactions. Statement-II:Vinyl group is electron-donation.