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ECAT Chemistry Chapter 14 Group IIIA & IVA Elements Online Test MCQs With Answers
Question # 1
The acid used in lead storage cells is
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Phosphoric acid
Nitric acid
Sulphuric acid
Hydrochloric acid
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Question # 2
Dipole moment of CO molecule is:
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0.0
1.112 D
0.112 D
2.112 D
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Question # 3
Which property is not present in Al?
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Reacts with acid
Reacts with bases
Changes litmus paper
Changes methyle orange colour
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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
______ reacts with alkalis to give hydrogen
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Be
Mg
Ca
None
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Question # 6
P
2
O
5
is heated with water to give
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Hypophosphorus acid
Phosphorus acid
Hypophosphorus acid
Orthophosphorus acid
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Question # 7
Which of the following is a tetrabasic acid?
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ORthophosphoric acid
Hyposphosphorus acid
Metaphosphoric
Pyrophosphoric acid
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Question # 8
Which carbonate of alkali metals is insoluble in water
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Na
2
CO
3
K
2
CO
3
Li
2
CO
3
Cs
2
CO
3
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Question # 9
Which is litharge or massicot?
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PbO
Pb
2
O
Pb
3
O
4
PbO
2
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Question # 10
Alkali metals react violently with halogens to form
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Hydrides
Halides
Anyhydrides
None of these
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Question # 11
Which element among the following belongs to Group IV-A of the periodic table?
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Barium
Iodine
Lead
Oxygen
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Question # 12
The acid which has a peroxy linkage is
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Sulphurous acid
Pyrosulphuric acid
Dithionic acid
Caro's acid
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Question # 13
Which of all following compound is not possible
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Question # 14
Group VA of the periodic table consists of the elements N, P, As, Sb and Bi, On passing from N to Bi, the oxides of the elements of general formula M
2
O
3
become
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Stronger reducing agents
More ionic
More basic
More volatile
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Question # 15
Pb has inert pair of electrons:
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One
Two
Three
Four
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Question # 16
Red P can be obtained form white P by
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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 # 17
Sodium hexametaphophate is known as
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Calgon
Permutite
Natalite
Nitrolim
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Question # 18
______ gives peroxide
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Li
Ba
Sr
Be
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Question # 19
Sodium is never found free in nature because of its
Choose an answer
Chemical reactivity
Small ionic size
Small atomic volume
None of these
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Question # 20
Which one of the following properties is not correct for ozone?
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It oxidizes lead sulphides
It oxidizes potassium iodide
It oxidizes mercury
It cannot act as a bleaching agent
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Question # 21
Which shows maximum catenation property?
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S
Se
Te
O
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Question # 22
S-block elements consist of
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Alkali metals
Alkaline earth metals
Alkali and alkaline earth metals
None of these
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Question # 23
The chemical formula of Trona is
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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 # 24
Which is used to remove air bubbles form metals?
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B
Be
Mg
Al
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Question # 25
Hybridized in oxygen is:
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sp
sp
2
sp
3
dsp
3
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Question # 26
Which of the following is formed by the action of water on sodium peroxide?
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H
2
N
2
O
2
CO
2
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Question # 27
Which of the following compound is industrially prepared by the electrolysis of solution of NaCl
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Na
2
CO
3
NaHCO3
NaOH
NaOCl
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Question # 28
Alkaline earth metals are usually
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Reducing agent
Oxidizing agent
Amphoteric
Acidic
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Question # 29
Which of the following fluorides does not exists?
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NF
5
PF
5
AsF
5
SbF
5
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Question # 30
Which element forms an iron with charge
3+
?
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Berylium
Aluminium
Carbon
Silicon
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Question # 31
Which of the following form normal oxide
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K
Li
Na
None
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