Atomos Test Generator Free PYQs ExamsMy practice Log in / Sign up free

Chemical Bonding and Molecular Structure

JEE Main 2026 (Online) 5th April Evening ShiftMCQEasy📈 Topic in 8% papers+4−1
Ques. 1JEE Main 2026, 5 April (Evening Shift)

The covalent radii of atoms A and B are rA and rB, respectively. The covalent bond length and total length of AB molecule are respectively

  1. (rA + rB), 2(rA + rB)
  2. 12(rA + rB), (rA + rB)
  3. (rA + rB), (rA + rB)
  4. 2(rA + rB), 12(rA + rB)

Answer

(1) (rA + rB), 2(rA + rB)

Solution

As per NCERT, the covalent bond length is the distance between the nuclei of the bonded atoms: R = rA + rB.

[figure]

The total length of the AB molecule runs from the outer edge of A to the outer edge of B:

Total length = rA + (rA + rB) + rB

⇒ Total length = 2rA + 2rB = 2(rA + rB)

∴ Bond length = (rA + rB), total length = 2(rA + rB)

Answer: (1)

Keep practising — Chemical Bonding and Molecular Structure

Ques. 2JEE Main 2026, 4 April (Morning Shift)

According to Lewis theory, the total number of bond-pairs and lone pair of electrons around the central atom of XeO64- ion is .

Ques. 3JEE Main 2026, 4 April (Evening Shift)

Which of the following pictorial diagrams most correctly represents the * ( antibonding) molecular orbital between two atoms if the internuclear axis is taken to be in the z-direction ( z-axis) ?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 4JEE Main 2026, 2 April (Morning Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

  1. Both Statement I and Statement II are true
  2. Both Statement I and Statement II are false
  3. Statement I is true but Statement II is false
  4. Statement I is false but Statement II is true
Ques. 5JEE Main 2026, 2 April (Evening Shift)

SF4 is isostructural with : Choose the correct answer from the options given below :

  1. C Only
  2. C and E Only
  3. A and D Only
  4. B and E Only
Ques. 6JEE Main 2026, 28 January (Morning Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Both Statement I and Statement II are false
  2. Statement I is true but Statement II is false
  3. Statement I is false but Statement II is true
  4. Both Statement I and Statement II are true
Ques. 7JEE Main 2026, 28 January (Evening Shift)

Match List-I with List-II according to shape. Choose the correct answer from the options given below :

  1. A-II, B-III, C-I, D-IV
  2. A-III, B-II, C-IV, D-I
  3. A-II, B-III, C-IV, D-I
  4. A-II, B-I, C-III, D-IV
Ques. 8JEE Main 2026, 24 January (Morning Shift)

Given below are statements about some molecules/ions. Identify the CORRECT statements. Choose the correct answer from the options given below:

  1. B & C Only
  2. B, C & D Only
  3. A, C & D Only
  4. A, B, C, D & E
Ques. 9JEE Main 2026, 24 January (Morning Shift)

Among the following, the CORRECT combinations are Choose the correct answer from the options given below:

  1. B, C and D Only
  2. A, B, C and D
  3. A, B and C Only
  4. A and B Only
Ques. 10JEE Main 2026, 24 January (Evening Shift)

Pair of species among the following having same bond order as well as paramagnetic character will be-

  1. O2-, N2+
  2. O2+, N22-
  3. O2-, N2-
  4. O2+, N2-
Ques. 11JEE Main 2026, 23 January (Morning Shift)

Identify the molecule (X) with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among HNO3, H2SO4, NF3 and O3. Choose the correct bond angle made by the central atom of the molecule (X).

  1. 107
  2. 102
  3. 120
  4. 116

All Chemical Bonding and Molecular Structure PYQs →

PDFDownload Chemical Bonding and Molecular Structure PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All JEE Main Chemistry chapters
Physical ChemistrySome Basic Concepts of ChemistryStructure of AtomStates of MatterThermodynamicsEquilibriumRedox ReactionsSolutionsElectrochemistryChemical Kinetics
Inorganic ChemistryClassification of Elements and Periodicity in PropertiesChemical Bonding and Molecular Structurep-Block Elements (Group 13 & 14)p-Block Elements (Group 15–18)d- and f-Block ElementsCoordination Compounds
Organic ChemistryOrganic Chemistry – Some Basic Principles and TechniquesIsomerismHydrocarbonsHaloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomoleculesPrinciples Related to Practical Chemistry