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chemical Bonding

Total questions: 35

Worksheet time: 20mins

Name
Class
Date
1.

The intermolecular forces that cause the instantaneous dipole in molecules is

a)

London dispersion

b)

Hydrogen bond

c)

dipole-dipole forces

d)

covalent bond

2.

Which of the following has bond angle of 

 120°120\degree  

a)

Trigonal planar

b)

Tetrahedral

c)

Square planar

d)

Bent

3.

a)

Trigonal bipyramidal

b)

Tetrahedral

c)

Seesaw

d)

T-Shaped

4.

Ionic bond is between

a)

Metal

b)

Non metal

c)

Metal and non metal

5.

What is the exception to octet rule for BF3

a)

Incomplete octet

b)

Expanded octet

c)

Odd electron

d)

obey octet rule

6.

The bond angle in the figure is

7.

What do you understand by the term Hybridization?

4 lines
8.

Which of the following substances has a dipole moment more than zero?

a)
Carbon Dioxide (CO2)
b)
Benzene (C6H6)
c)
Methane (CH4)
d)
Water (H2O)
9.

In the resonating structures of benzene, the number of sigma and pi bonds are

a)
5 sigma bonds and 4 pi bonds
b)
6 sigma bonds and 2 pi bonds
c)
7 sigma bonds and 3 pi bonds
d)

12 sigma bonds and 3 pi bonds

10.

According to Lewis, in a covalent bond, the (a)   is given by the number of bonds between two atoms in a molecule.

11.

The angle between the lines representing the orbitals containing the bonding – electrons

(a)  

12.

Ionic bonds will be formed more easily between elements with low ionization enthalpy and

(a)  

13.

  1. 15. The shape of gaseous SnCl2

a)

A) Tetrahedral

b)

B) Linear

c)

C) Angular

d)

D) T - Shape

14.

  1. 14. Which is not a linear molecule?

a)

A) CO2

b)

B) C2H2

c)

C) HCN

d)

D) H2O

15.

  1. 13. Which of the following species, the one having planar structure is

a)

A) NH4+

b)

B) BF4-

c)

C) XeF4

d)

D) CCl4

16.

  1. 12. Which of the following is not a pyramidal species

a)

A) NH3

b)

B) H3O+

c)

C) PH3

d)

D) NH4+

17.

  1. 11. In which of the following molecule, the central atom is not SP3d hybridized

a)

A) PCl5

b)

B) ClF3

c)

C) SeF6

d)

D) XeF2

18.

  1. 10. The oxidation state of Sulphur in Thiosulphuric acid

a)

A) +6

b)

B) + 8

c)

C) +3

d)

D) +4

19.

  1. 9. The molecular formula of Caro's acid

a)

A) H2SO4

b)

B) H2S2O7

c)

C) H2SO5

d)

D) H2S2O8

20.

  1. 8. The hybridization of atomic orbitals of nitrogen in NO2+ , NO2- , NH4+ are respectively

a)

A) SP2, SP3, SP2

b)

B) SP, SP2, SP3

c)

C) SP2, SP, SP3

d)

D) SP2, SP3, SP

21.

  1. 7. What is the hybridization of oxgen in Cl2O molecule

a)

A) SP2

b)

B) SP

c)

C) SP3

d)

D) None

22.

  1. 6. The hybrid orbital with least S - character is

a)

A) SP3d

b)

B) SP2

c)

C) SP

d)

D) SP3

23.

  1. 5. Which of the following molecule is linear

a)

A) SO2

b)

B) NO2+

c)

C) NO2-

d)

D) SCl2

24.

  1. 4. The geometry of ClO3- ion according to valence shell electron pair repulsion theory will be

a)

A) Planar triangular

b)

B) Pyramidal

c)

C) Tetrahedral

d)

D) Square planar

25.

  1. 3. In OF2 molecule, the total number of bond pairs and lone pairs of electrons are respectively

a)

A) 2,6

b)

B) 2,8

c)

C) 2,10

d)

D) 2,9

26.

  1. 2. In NO3- ion, number of bond pairs and lone pairs of electrons on nitrogen atom are

a)

A) 2,2

b)

B) 3,1

c)

C) 1,3

d)

D) 3,0

27.

In which of the following, central atom has different

hybridisation than others ?

a)

Cl20

b)

OF2

c)

H20

d)

SO2

28.
a)

A

b)

B

c)

C

d)

D

29.
a)

2.5

b)

3

c)

2.0

d)

1

30.

Which one of the following does not have intermolecular

H-bonding ?

a)

H2O

b)

NH3NH_3  

c)

O-Nitrophenol

d)

CH3CH_3  

31.

Which of the following does not exist on the basis of

molecular orbital theory?

a)

H2+H_2^+  

b)

H2H_2  

c)

He2He_2  

d)

O2O_2  

32.

How many bonded electron pairs are present in IF7 molecule?

a)

8

b)

7

c)

6

d)

5

33.

Indicate the wrong statement according to Valence bond theory :

a)

A sigma bond is stronger then pi-bond

b)

p-orbitals always have only sidewise overlapping

c)

s-orbitals never form pi bonds

d)

There can be only one sigma bond between two atoms

34.

Which one is the electron deficient compound :

a)

ICl

b)

BCl3BCl_3  

c)

NH3NH_3  

d)

NONE OF THESE

35.

Among the following which property is commonly exhibited by a covalent molecule

a)

(A) High solubility in water

b)

High electrical conductance

c)

Low boiling point

d)

High melting point

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