Chemistry – Class 11 Practice Test 3

1. Sharing or transfer of electrons from one atom to the other to attain stable octet configuration follows _______

Triplet rule

Octet rule

Septet rule

Duet rule

2. What is the condition, for a molecule do not exist?

N_A >/< N_B

N_A = N_B OR N_A > N_B

N_A < N_B

N_A > N_B

3. What do you think is the relationship between bond order and bond length?

Directly proportional

No relation

Cannot predict

Indirectly proportional

4. Which of the following is a condition for the combination of atomic orbitals?

Combining atomic orbitals need not have equal energy

For combining atomic orbitals, X-axis should be taken as a molecular axis

Combining atomic orbitals must overlap to a minimum extent

Combining atomic orbitals must have symmetry as per molecular axis

5. Nitrogen, fluorine and oxygen are ___________ in nature.

semi-metallic

metallic

electropositive

electronegative

6. The faster the body moves, the higher the thermal energy.

True

False

7. What is the bond angle of H-C-H in methane molecule?

104.5°

109.5°

108°

120°

8. Which of the following statement is true regarding hybrid orbitals?

The amount of orbitals formed after the hybridization is not equal to the number of orbitals before hybridization

The hybrid orbitals don’t have equal energy

They can form more stable bonds than the pure orbitals

Hybridization doesn’t indicate geometry

9. A pi bond is stronger than a sigma bond.

True

False

10. What is the electronic configuration of hydrogen molecule?

σ1s²

σ1s

σ*1s

σ1s¹