Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202126 FebruaryMorning Shift
Exam
JEE Main
Year
2021
Date
26 February
Shift
Morning Shift
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

JEE Main 2021 · 26 February · Morning Shift · Chemistry · Chemical Bonding and Molecular Structure

Given below are two statements: one is labelled as Assertion A and...

Given below are two statements: one is labelled as Assertion AA and the other is labelled as Reason RR.

Assertion AA : Dipole-dipole interactions are the only non-covalent interactions, resulting in hydrogen bond formation.

Reason RR : Fluorine is the most electronegative element and hydrogen bonds in HFHF are symmetrical.

In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A :

Options

  1. AAA is false but RR is true
  2. BBoth AA and RR are true but RR is NOT the correct explanation of AA
  3. CAA is true but RR is false
  4. DBoth AA and RR are true and RR is the correct explanation of AA

Correct answer

A. AA is false but RR is true

Step-by-step solution

Assertion is incorrect since in hydrogen bonding, Dipole-dipole interactions are noncovalent but ion-dipole interaction can also result in HH-bond formation.

Reason is correct since FF is most electronegative element & structure is

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R . Assertion A :

Symmetrical HH-bonds are present

Practice Chemical Bonding and Molecular Structure on Quantrex Academy →

More from Chemical Bonding and Molecular Structure

The correct order of dipole moments for the given species is JEE Advanced 2026Consider the following species: SOCl_2 , XeOF_4 , ClF_3 , ClF_5 , XeF_5^+ , SO_3^ 2… JEE Advanced 2026The correct order of ONO bond angle in the given species is JEE Advanced 2026Bromine trifluoride autoionizes to form BrF_2^ and BrF_4^ . The shapes of the cation and… JEE Main 2026Given below are two statements : Statement I : The number of compounds among SO _2 , SO… JEE Main 2026Given below are two statements : Statement I : F _2 O Statement II : SiF _4 , SnF _4 and… JEE Main 2026The pairs among A = [SO_3^ 2- , CO_3^ 2- ] , B = [O_2^ 2- , F_2] , C = [CN^-, CO] , D =… JEE Main 2026The covalent radii of atoms A and B are r_A and r_B , respectively. The covalent bond… JEE Main 2026 Full Chemical Bonding and Molecular Structure list All JEE Main PYQs