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Online Tests
ECAT Chemistry Chapter 14 Group IIIA & IVA Elements Online Test MCQs With Answers
Question # 1
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 # 2
In the earth crust sodium is
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2.50%
2.30%
2.40%
3.50%
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Question # 3
Chile saltpetre has the chemical formula
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NaNO
3
KNO
3
Na
2
B
4
O
7
Na
2
CO
3
H
2
O
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Question # 4
When sulphur is boiled with Na
2
SO
3
solution, the compound formed is
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Sodium sulphides
Sodiums sulphates
Sodium persulphate
Sodium thiosulphate
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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
Down's cell is used to prepare
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Sodium carbonate
Sodium bicarbonate
Sodium metal
Sodium hydroxide
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Question # 7
The number of unpaired electrons in the p-subshell of oxygen atom
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1
2
3
4
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Question # 8
The oxidation number of each element of group l-A is
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0
+1
+2
-1
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Question # 9
The element caesium bears resemblance with
Choose an answer
Ca
Cr
Rubidium
None of the above
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Question # 10
The chemical formula of Epson salt is
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MgSO
4
MgCl
2
MgSO
4
. 7H
2
O
MgCl
2
. 7H
2
O
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Question # 11
Commercial common salt becomes slight damp on storing because
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Common salt is hygroscope
Common salt contains some impurity, which is hygroscopic
Salt in efflorescent
Salt is crystalline
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Question # 12
NaHCO
3
is prepared by
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Down's process
Solvay's process
Nelson's process
None of these
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Question # 13
Which is not the form of silica?
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Amethyst quatz
Rose quatz
Smoky
None of these
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Question # 14
Boric acid cannot be used:
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An antiseptic in medicine
For washing eyes
In soda bottles
For enamels and glazes
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Question # 15
Bond angle is minimum for
Choose an answer
H
2
O
H
2
S
H
2
Se
H
2
Te
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Question # 16
The oxide of beryllium is
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Acidic
Amphoteric
Superoxide
Basic
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Question # 17
______ gives peroxide
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Li
Ba
Sr
Be
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Question # 18
Which of the element is not an alkaline earth metal
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Beryllium
Strontium
Barium
Caesium
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Question # 19
As a fixing agent in photography, sodium thisoulphate is used for
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Dissolving out unreacted silver bromide
Converting silver
Reducing solubility of AgBr
Preventing overdeveloping and fogging
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Question # 20
Which element form group 15 gives most basic compound with hydrogen?
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Nitrogen
Bismuth
Arsenic
Phosphorus
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Question # 21
The chemical formula of gypsum is
Choose an answer
CaSO
4
. 5H
2
O
CaSO
4
. 4H
2
O
CaSO
4
. 2H
2
O
None of these
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