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Online Tests
ECAT Chemistry Chapter 14 Group IIIA & IVA Elements Online Test MCQs With Answers
Question # 1
Which element has highest oxidation potential
Choose an answer
Li
Be
Ba
Ra
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Question # 2
Alkaline earth metals posses two electrons in their outermost
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F-orbital
D-orbital
S-orbital
P-orbital
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Question # 3
The acid which has a peroxy linkage is
Choose an answer
Sulphurous acid
Pyrosulphuric acid
Dithionic acid
Caro's acid
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Question # 4
Which of the following has highest dipole moment?
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NH
3
PH
3
AsH
3
SbH
3
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Question # 5
Which one of the following is not an alkali metal
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Francium
Caesium
Rubidium
Radium
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Question # 6
Sulphuric acid reacts with PCl
5
to give
Choose an answer
Thionyl chloride
Sulphur monochloride
Sulphuryl chloride
Sulphur tetrachloride
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Question # 7
Dipole moment of CO molecule is:
Choose an answer
0.0
1.112 D
0.112 D
2.112 D
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Question # 8
Which of the following elements is not present abundantly in earth's crust?
Choose an answer
Silicon
Aluminium
Sodium
Oxygen
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Question # 9
The formula of lime stone is
Choose an answer
CaCl
2
MgCO
3
Na
2
CO
3
CaCO
3
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Question # 10
Carbonates of alkali metals dissolves freely in water to form
Choose an answer
Acidic solutions
Neutral solution
Alkaline solution
None of these
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Question # 11
Red P can be obtained form white P by
Choose an answer
Heating it with a catalyst in an inert atmosphere
Distilling it in an inert atmosphere
Dissolving it in CS
2
and crysllizing
Melting it ad pouring the liquid into water
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Question # 12
In a group IIA from top to bottom as the atomic number increases, there is regular decreases in
Choose an answer
Ionic size
Atomic size
Ionization potential
None of these
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Question # 13
Solvay process is used in the manufacture of
Choose an answer
Na
2
CO
3
NaHCO
3
CaCl
2
All
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Question # 14
Baking powder has which one of the following formula
Choose an answer
Na
2
CO
3
Na
2
SO
4
NaHCO
3
K
2
CO
3
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Question # 15
Sulphuric acid has great affinity for water because
Choose an answer
It hydrolyses the acid
It decomposes the acid
Acid forms hydrates with water
Acid decomposes water
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Question # 16
Permonosulphuric acid is known as
Choose an answer
Marshall's acid
Carlo's acid
Sulphuric acid
None of these
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Question # 17
Which of the following is not the reactions of lithium
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Question # 18
Which element forms an iron with charge
3+
?
Choose an answer
Berylium
Aluminium
Carbon
Silicon
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Question # 19
Which has soapy touch?
Choose an answer
Na2B4O7
H3BO3
Ca2B6O11
HBO2
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Question # 20
What causes nitrogen to be chemically inert?
Choose an answer
Multiple bond formation in the molecule
Absence of bond distance
Short internuclear distance
High bond energy
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Question # 21
Which of the element is not an alkaline earth metal
Choose an answer
Beryllium
Strontium
Barium
Caesium
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Question # 22
The chemical formula of Trona is
Choose an answer
KCl . MgCl
2
. 6H
2
O
Na
2
CO
3
. 2NaHCO
3
. 2H
2
O
Na
2
CO
3
. H
2
O
KCl
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Question # 23
HNO
2
acts as an/a
Choose an answer
Acid
Oxidizing agent
Reducing agent
All the three
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Question # 24
Electron affinity of sulphur is
Choose an answer
More than O and Se
More than O but less than Se
Less than O but more than Se
Equal to O and Se
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Question # 25
Hypo is used in photography for
Choose an answer
Developing picture
Picture printed
The colour of picture
The fixation of picture
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Question # 26
Chief ore of aluminium is:
Choose an answer
Na
3
AIF
6
Al
2
O
3
.2H
2
O
Al
2
O
3
Al
2
O
3
.H
2
O
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Question # 27
Which one of the following pentafluorides cannot be formed?
Choose an answer
PF
5
AsF
5
SbF
5
BiF
5
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Question # 28
When ammonia is heated with cupric oxide, a molecule of ammonia will
Choose an answer
Gain 3 electrons
Lose 3 electrons
Gain 2 electrons
Lose 2 electrons
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Question # 29
Orthophosphoric acid is
Choose an answer
Monobasic
Dibasic
Tribasic
Tetrabasic
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Question # 30
Which salt is used for preserving food
Choose an answer
BaCl
2
CaCl
2
NaCl
Na
2
SO
4
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Question # 31
Which is used in navigational equipments?
Choose an answer
B
Be
Mg
Al
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