Chemical Bonding & Molecular Structure Test

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Chemical Bonding & Molecular Structure Test - 14

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Weekly Quiz Competition

Question 1
4 / -1

Which one of the following has longest covalent bond distance?

A
C—C

B
C—H

C
C—N

D
C—O
Question 2
4 / -1

Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding?

A
NH₃

B
H₂O

C
HCl

D
HF
Question 3
4 / -1

A
–0.75, 0.6

B
– 0.75, 1.0

C
– 0.75, 1.25

D
–3, 1.25
Question 4
4 / -1

Which of the followIng forms stable coordinate bonds?

A
NH₃ ,H₂O

B
NH₃, BF₃

C
NaOH, HCl

D
BF₃, BCl₃

Solution
Question 5
4 / -1

Which one of the following has a coordinate bond ?

A
NH₄ Cl

B
AlCl₃

C
NaCl

D
Cl₂
Question 6
4 / -1

Which combination of atoms can form a polar covalent bond?

A
H and H

B
H and Br

C
N and N

D
Na and Br
Question 7
4 / -1

Born-Haber cycle may be used to calculate

A
electronegativity

B
mass number

C
oxidation number

D
electron affinity
Question 8
4 / -1

Which of the following is a favourable factor for cation formation ?

A
Low ionisation potential

B
High electron affinity

C
High electonegativity

D
Small atomic size
Question 9
4 / -1

The boiling point of p-nitrophenol is higher than that of o-nitrophenol because

A
NO₂ group at p-position behave in a different way from that at o-position.

B
intramolecular hydrogen bonding exists in p-nitrophenol

C
there is intermolecular hydrogen bonding in p-nitrophenol

D
p-nitrophenol has a higher molecular weight than o-nitrophenol.
Question 10
4 / -1

Lattice energy of a solid increases, if

A
size of ions is small

B
charges of ions are small

C
ions are neutral

D
None of the above

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Chemical Bonding & Molecular Structure Test - 14

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Chemical Bonding & Molecular Structure Test - 14

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Question 1

C—C

C—H

C—N

C—O

Question 2

NH3

H2O

HCl

HF

Question 3

–0.75, 0.6

– 0.75, 1.0

– 0.75, 1.25

–3, 1.25

Question 4

NH3 ,H2O

NH3, BF3

NaOH, HCl

BF3, BCl3

Solution

Question 5

NH4 Cl

AlCl3

NaCl

Cl2

Question 6

H and H

H and Br

N and N

Na and Br

Question 7

electronegativity

mass number

oxidation number

electron affinity

Question 8

Low ionisation potential

High electron affinity

High electonegativity

Small atomic size

Question 9

NO2 group at p-position behave in a different way from that at o-position.

intramolecular hydrogen bonding exists in p-nitrophenol

there is intermolecular hydrogen bonding in p-nitrophenol

p-nitrophenol has a higher molecular weight than o-nitrophenol.

Question 10

size of ions is small

charges of ions are small

ions are neutral

None of the above

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NH₃

H₂O

NH₃ ,H₂O

NH₃, BF₃

BF₃, BCl₃

NH₄ Cl

AlCl₃

Cl₂

NO₂ group at p-position behave in a different way from that at o-position.