Home
Class 12
CHEMISTRY
Assertion (A) : In monohaloarenes, furth...

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

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

Text Solution

Verified by Experts

The correct Answer is:
D

Hint: Correct reason: Due to +R effect of halogen, negative charge appear at ortho and para position of the ring.
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

Assertion : Phenol is more reactive than benzene towards electrophilic substitution reaction. Reason: In case of Phenol, the intermediate carbocation is more resonance stabilised.

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.

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.

Assertion (A) : Replication and transcription occur in the nucleus but translation occurs in the cytoplasm. Reason (R ) : m-RNA is transferred from the nucleus into the cytoplasm where ribosomes and amino acids are available for protein synthesis.

Assertion (A) : HI cannot be prepared by the reaction of KI with concentrated H_(2)SO_(4) . Reason (R) : HI has lowest H - X bond strength among halogen acids .

Assertion (A) : E_("cell")^(@) should have a positive value for the cell to function. Reason (R) : E_("cathode") lt E_("anode")

Assertion(A) : The total number of atoms present in a simple cubic unit cell is one. Reason ( R) : Simple cubic unit cell has atoms at its corners, each of which is shared between eight adjacent unit cells.

Assertion (A) : tert-butyl bromide undergoes Wurtz reaction to give 2,2,3,3-tertramethylbutane. Reason (R) : In Wurtz reaction, alkyl halides reacts with sodium in dry ether to give hydrocarbon containing double the number of carbon atoms present in the halides.