sInfoEra
Home
MCQs
IIT JEE — Learn
IIT JEE CHEMISTRY Chemical Bonding And Molecular Structure Part-1
Review each question and reveal answers to strengthen your understanding
Home
/
MCQs
/
IIT JEE CHEMISTRY Chemical Bonding And Molecular Structure Part-1
1
The bond angle in ammonia is
A
106 degree
B
107 degree
C
110 degree
D
99 degree
Show Answer
✅ Correct Answer: 2
2
The increase in bond order results in
A
increase in bond length and bond energy
B
decrease in bond length and bond energy both
C
decrease in bond length and increase in bond energy
D
none of the above
Show Answer
✅ Correct Answer: 3
3
In which of the followingmolecules carbon is not sp3 hybridized?
A
Benzaldehyde
B
Cyclohexane
C
Phenol
D
Benzyl chloride
Show Answer
✅ Correct Answer: 1
4
Hydrogen chloride gas has
A
hydrogen bond
B
ionic bond
C
covalent bond
D
double bond
Show Answer
✅ Correct Answer: 3
5
Ethyl alcohol and methoxy methane are isomeric but ethyl alcohol has higher boiling point because
A
alcohol has hydrogen bonding
B
alcohol is soluble in water
C
ether is more volatile
D
ether is denser than alcohol
Show Answer
✅ Correct Answer: 1
6
Strongest bond is formed by the overlap of
A
s-s orbitals
B
ps orbitals
C
p-p orbitals
D
s and p orbitals
Show Answer
✅ Correct Answer: 3
7
In which of the following octet rule is not applicable?
A
Alkali earth metal
B
Alkaline earth metal
C
Transition elements
D
p-block
Show Answer
✅ Correct Answer: 3
8
Water has high boiling point because it
A
is ionic
B
is covalent
C
has high dielectric constant
D
is having hydrogen bonding
Show Answer
✅ Correct Answer: 4
9
Which of the following is most volatile?
A
HF
B
HCI
C
HI
D
HBr
Show Answer
✅ Correct Answer: 1
10
Which of the following is the weakest bond?
A
Metallic
B
Covalent
C
Ionic
D
H
Show Answer
✅ Correct Answer: 4
11
Covalent character of an ionic compound increases with
A
decrease in anion size
B
decrease in cation size
C
increase in cation size
D
decrease in both cation and anion size
Show Answer
✅ Correct Answer: 3
12
Which of the following has maximum ionic character?
A
LiCl
B
CuCl
C
NaCl
D
CsCl
Show Answer
✅ Correct Answer: 4
13
Higher the bond order greater is
A
bond energy
B
bond angle
C
bond length
D
paramagnetism
Show Answer
✅ Correct Answer: 3
14
Oxygen-oxygen bond length in ozone is same because of
A
hyper conjugation
B
resonance
C
covalent and ionic bond
D
refraction
Show Answer
✅ Correct Answer: 2
15
Ionic solids are characterised by
A
good conductivity in solid state
B
solubility in polar solvent
C
high vapour pressure
D
low melting point
Show Answer
✅ Correct Answer: 2
16
From the following molecules one that contains both ionic and covalent bonds is/are
A
chlorobenzene
B
sodium chloride
C
sodium hydroxide
D
Water
Show Answer
✅ Correct Answer: 3
17
Which of the following is a triatomic molecule?
A
Ammonia
B
Phosphine
C
Sulphuric anhydride
D
Sulphurous anhydride
Show Answer
✅ Correct Answer: 4
18
The hydrogen halide which has maximum boiling point is
A
HI
B
HBr
C
HF
D
HCl
Show Answer
✅ Correct Answer: 3
19
Ammonia molecule is
A
triangular bipyramidal
B
octahedral
C
tetrahedral
D
pyramidal
Show Answer
✅ Correct Answer: 4
20
The bond angle in water is
A
104.5 degree
B
94 degree
C
103 degree
D
99 degree
Show Answer
✅ Correct Answer: 1
21
The number of electrons that are shared between two atoms having a triple bond are
A
7
B
6
C
5
D
3
Show Answer
✅ Correct Answer: 2
22
With the rise of temperature conductivity of metals
A
increases
B
decreases
C
may increase or decrease
D
remains constant
Show Answer
✅ Correct Answer: 1
23
Silicon dioxide has higher boiling point as compared to carbon dioxide because
A
silicon dioxide is ionic
B
silicon dioxide is octahedral
C
silicon dioxide is a covalent solid
D
silicon dioxide is more polar
Show Answer
✅ Correct Answer: 3
24
Shape of the molecule is decided by
A
both sigma and pi bonds
B
neither sigma nor pi bonds
C
pi bonds
D
sigma bonds
Show Answer
✅ Correct Answer: 4
25
Resonance is not shown by
A
carbon dioxide molecule
B
silicon dioxide molecule
C
carbonate ion
D
benzene
Show Answer
✅ Correct Answer: 1
26
Variable valency is shown by
A
N
B
Na
C
F
D
O
Show Answer
✅ Correct Answer: 4
27
Amongst HX, the maximum dipole moment is of
A
HBr
B
HCl
C
HF
D
HI
Show Answer
✅ Correct Answer: 3
28
Maximum covalency of an atom of an element is equal to the
A
no. of unpaired electrons in the p orbitals
B
total no. of electrons in the s and p orbitals
C
total no. of electrons in the p-orbitals
D
none of the above
Show Answer
✅ Correct Answer: 2
29
An ionic bond is formed when one of the atoms
A
has low ionisation energy
B
has low ionisation energy and other has high electron affinity
C
has high ionisation energy and other has low electron affinity
D
has high electron affinity
Show Answer
✅ Correct Answer: 2
30
Tetracovalency of carbon can be explained on the basis of
A
electronegativity
B
promotion rule
C
hybridization
D
resonance
Show Answer
✅ Correct Answer: 2
31
Which among the following is not the characteristic property of carbon?
A
Availability of d-electron for bonding
B
Highest electronegativity in the group
C
Multiple bond formation
D
Resonance
Show Answer
✅ Correct Answer: 1
32
The number of the unpaired electrons in O-2 ion are
A
0
B
4
C
2
D
1
Show Answer
✅ Correct Answer: 1
33
Which of the following bond is the most covalent?
A
Si-H
B
P-H
C
N-H
D
none of the above
Show Answer
✅ Correct Answer: 3
34
Nitrogen atom has atomic no. 7 while oxygen atom 8. The total number of electrons in nitrate ion is:
A
18
B
28
C
32
D
16
Show Answer
✅ Correct Answer: 3
35
Maximum number of bonds between two atoms of a covalent bond can be
A
four
B
five
C
three
D
zero
Show Answer
✅ Correct Answer: 3
36
Diamond is not conducting electrically because
A
there are only carbon atoms present
B
it is of crystalline nature
C
its structure is very compact
D
no free electrons are presen
Show Answer
✅ Correct Answer: 4
37
Metallic sodium is
A
conductor of electricity
B
insulator
C
semi-conductor
D
none of these
Show Answer
✅ Correct Answer: 1
38
Which of the following bond is the most polar?
A
O-O
B
C-F
C
N-F
D
Cl-Cl
Show Answer
✅ Correct Answer: 2
39
A metallic bond is
A
electrostatic
B
covalent
C
polar
D
non polar covalent bond
Show Answer
✅ Correct Answer: 1
40
A molecule which contains unpaired electron is
A
carbon monoxide
B
oxygen molecule
C
molecular nitrogen
D
carbon dioxide
Show Answer
✅ Correct Answer: 1
41
Which concept explains the fact that ortho nitro-phenol is more volatile than p-nitrophenol?
A
Hydrogen bonding
B
Hyper conjugation
C
Covalent bonding
D
Resonance
Show Answer
✅ Correct Answer: 1
42
Electonegativity values of elements help in predicting
A
polarity of molecules
B
covalency of the elements
C
size of the atoms
D
bond length
Show Answer
✅ Correct Answer: 1
43
Which out of the following has highest boiling point?
A
HCl
B
HBr
C
HF
D
HI
Show Answer
✅ Correct Answer: 4
44
Out of the following the weakest interact are involved in
A
Van der Waals interaction
B
ionic bond
C
polar covalent bond
D
hydrogen bond
Show Answer
✅ Correct Answer: 1
45
Ionic bond formation is favoured by
A
larage cation and large anion
B
small cation and small anion
C
small cation
D
small anion
Show Answer
✅ Correct Answer: 2
46
The bond formation in atoms is due to the fact that they
A
get their energy lowered
B
acquire higher energy state
C
change their position
D
none of the above
Show Answer
✅ Correct Answer: 1
47
The nature of bonding in BF3.NH3 is
A
ionic
B
co-ordinate
C
covalent
D
metallic
Show Answer
✅ Correct Answer: 2
48
Formation of ionic compounds is favoured by
A
low charge on cation and anion
B
low electron affinity of anion
C
high ionisation energy of cation
D
high lattice energy
Show Answer
✅ Correct Answer: 4
49
The element with atomic no. 9 can exhibit an oxidation state of
A
1
B
2
C
5
D
-1
Show Answer
✅ Correct Answer: 4
50
Which among the following elements has tendency to form covalent compounds?
A
Aluminium
B
Strontium
C
Beryllium
D
Calcium
Show Answer
✅ Correct Answer: 3
Back to All Quizzes