Geometry and Shapes of Molecules, Class 11 Chemistry NCERT Solutions

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying.

1. Two atoms are said to be bonded when:

 System acquires minimum energy

 Potential energy becomes maximum

 Magnitude of attractive forces is greater than repulsive forces

 Energy becomes zero

Question 1 of 20

2. The decreasing order of the repulsive interactions between various electron pairs is:

 lp-bp>lp-lp>bp-bp

 bp-bp>lp-lp>lp-bp

 lp-bp>bp-bp=lp-lp

 lp-lp>lp-bp>bp-bp

Question 2 of 20

3. Valence bond theory was introduced by:

  Gillespie

 Heitler

 Pauling

 Lewis

Question 3 of 20

4. Which molecule has a bent shape?

 CO₂

 BeH₂

 H₂O

 NF₃

Question 4 of 20

5. Repulsive forces arise between:

  Electrons of two atoms

 Neutrons of two atoms

 Nucleus of one atom and its own electron

 Nucleus of one atom and electron of other atom

Question 5 of 20

6. The number of lone pairs of electrons on SF₄, CF₄ and XeF₄ are:

 1,1 and 1 lone pairs of electrons respectively

 1,0 and 2 lone pairs of electrons respectively

 2,0 and 1 lone pairs of electrons respectively

 0,1 and 2 lone pairs of electrons respectively

Question 6 of 20

7. Pick out the pair of species having identical shapes for both the molecules.

 BF₃ , PCl₃

 PF , IF₅

 CF₄,SF₄

 XeF₂ , CO₂

Question 7 of 20

8. Among the following species octahedral shape is found in:

  SF₆

 PCl₅

 HgCl₂

 BF_4-

Question 8 of 20

9. Which molecule has a trigonal pyramidal shape?

  AB₄E

 AB₂E₂

 AB₃E

 AB₂E

Question 9 of 20

10. Which of the following orbitals give a zero overlap?

  pz^–pz

 py^–py

 px^–py

 px^–px

Question 10 of 20

11. Among the following molecules, the molecule with trigonal planar geometry is:

  BF₃

 IF₃

 NH₃

 PCl₃

Question 11 of 20

12. A pi-bond is formed by the overlap of:

 p-p orbitals in sidewise manner

 s-p orbitals

 s-s orbitals

 p-p orbitals in end to end fashion

Question 12 of 20

13. Which of the following has a square pyramidal shape?

 XeF₄

 NH₃

 ClF₃

 BrF₅

Question 13 of 20

14. According to the VSEPR theory, the geometry and shape of the molecule depends upon:

 Lone pair of electrons present on the central atom

 Bond pair of electrons present on the central atom

 Hybridization of the molecule

 Both bond pair as well as lone pair of electrons in the valence shell of the central atom

Question 14 of 20

15. The statement that is true about H₂O molecule is:

 It has T-shaped geometry and two lone pair of electrons.

 It has V-shaped geometry and two lone pair of electrons.

 It has tetrahedral geometry and no lone pair of electrons.

 It has pyramidal geometry and one lone pair of electrons.

Question 15 of 20

16. Valence bond theory explains:

  Directional properties of bonds in molecules

 Resonance

 Polarity of bonds

 Formal charge on the atoms in molecules

Question 16 of 20

17. Among the following species linear shape is found in:

  SO₂

 O₃

 NO₂⁺

 NO₂^–

Question 17 of 20

18. Which of the following molecule doesn’t have a lone pair?

 BeCl₂

 XeF₄

 NH₃

 H₂O

Question 18 of 20

19. Among the following species the pair that have V-shaped geometry is:

 PbCl₂, CS₂

 CO₂, SnCl₂

 H₂O, CO₂

  PbCl₂ , SnCl₂

Question 19 of 20

20. Among the following compounds the maximum number of lone pair is present on the central atom of:

  SF₄

 I₃^–

 XeF₄

 ClO₃^–

Question 20 of 20

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