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

Your comments:

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

Your comments:

Question 2 of 20

3. Valence bond theory was introduced by:

Gillespie

Heitler

Pauling

Lewis

Your comments:

Question 3 of 20

4. Which molecule has a bent shape?

CO₂

BeH₂

H₂O

NF₃

Your comments:

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

Your comments:

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

Your comments:

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

Your comments:

Question 7 of 20

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

SF₆

PCl₅

HgCl₂

BF_4-

Your comments:

Question 8 of 20

9. Which molecule has a trigonal pyramidal shape?

AB₄E

AB₂E₂

AB₃E

AB₂E

Your comments:

Question 9 of 20

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

pz^-pz

py^-py

px^-py

px^-px

Your comments:

Question 10 of 20

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

BF₃

IF₃

NH₃

PCl₃

Your comments:

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

Your comments:

Question 12 of 20

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

XeF₄

NH₃

ClF₃

BrF₅

Your comments:

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

Your comments:

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.

Your comments:

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

Your comments:

Question 16 of 20

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

SO₂

O₃

NO₂⁺

NO₂^-

Your comments:

Question 17 of 20

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

BeCl₂

XeF₄

NH₃

H₂O

Your comments:

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

Your comments:

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^-

Your comments:

Question 20 of 20

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