Chemical Bonding & Molecular Structure Test

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Chemical Bonding & Molecular Structure Test - 25

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Weekly Quiz Competition

Question 1
4 / -1

Metals are good conductors of electricity because they contain

A
ionic bonds

B
a network structure

C
very few valence electrons

D
free electrons
Question 2
4 / -1

Metallic lusture is explained by

A
diffusion of metal ions

B
oscillation of loose electrons

C
excitation of free protons

D
existence of bcc lattice
Question 3
4 / -1

A diatomic molecule has a dipole moment of 1.2 D. If its bond distance of 1.0 Å, what fraction of an electronic charge, e, exist on each atom?

A
25% of e

B
50% of e

C
60% of e

D
75% of e

Solution
Question 4
4 / -1

The correct stability order of the following resonance structure is

A
I > II > IV > III

B
I > III > II > IV

C
II > I > III > IV

D
III > I > IV > II
Question 5
4 / -1

If H— X bond length is 2.00 Å and H— X bond has dipole moment 5.12 x 10^-30 cm, the percentage of ionic character in the molecule will be

A
10%

B
16%

C
18%

D
20%

Solution
Question 6
4 / -1

The bond angle and dipole moment of water respectively, are

A
109.5°, 1.84 D

B
107.5°, 1.56 D

C
104.5°, 1.84 D

D
102.5°, 1.56 D
Question 7
4 / -1

The dipole moment of HBr is 1.6 x 10^-30 cm and interatomic spacing is 1 Å. The percentage ionic character of HBr is

A
7

B
10

C
15

D
27
Question 8
4 / -1

Dipole moment is shown by

A
cis-1, 2-dichloro ethene

B
trans-1, 2-dichloro ethene

C
trans-1 2-dichloro-2 pentene

D
Both (1) and (3)
Question 9
4 / -1

The molecule having largest dipole moment among the following is

A
CHI₃

B
CH₄

C
CHCl₃

D
CCl₄
Question 10
4 / -1

An elements has 8 electrons in its last shell which of the following is correct?

A
It will lost electrons

B
It will gain electrons

C
It neither gain nor lose electrons

D
None of the above

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Chemical Bonding & Molecular Structure Test - 25

Result

Chemical Bonding & Molecular Structure Test - 25

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SHARING IS CARING

Question 1

ionic bonds

a network structure

very few valence electrons

free electrons

Question 2

diffusion of metal ions

oscillation of loose electrons

excitation of free protons

existence of bcc lattice

Question 3

25% of e

50% of e

60% of e

75% of e

Solution

Question 4

I > II > IV > III

I > III > II > IV

II > I > III > IV

III > I > IV > II

Question 5

10%

16%

18%

20%

Solution

Question 6

109.5°, 1.84 D

107.5°, 1.56 D

104.5°, 1.84 D

102.5°, 1.56 D

Question 7

7

10

15

27

Question 8

cis-1, 2-dichloro ethene

trans-1, 2-dichloro ethene

trans-1 2-dichloro-2 pentene

Both (1) and (3)

Question 9

CHI3

CH4

CHCl3

CCl4

Question 10

It will lost electrons

It will gain electrons

It neither gain nor lose electrons

None of the above

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CHI₃

CH₄

CHCl₃

CCl₄