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Online Tests
ECAT Chemistry Chapter 15 Group IV-A and VI-A Elements Online Test MCQs With Answers
Question # 1
Aqua Regia has ratio of conc. HCl and HNO
3
Choose an answer
1 : 2
1 : 3
1 : 4
2 : 3
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Question # 2
Which can be prepared from HNO
3
?
Choose an answer
T.N.T
Fertilizers
Picric acid
All of these
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Question # 3
Nitrogen is present in atmosphere
Choose an answer
21%
36%
78%
89%
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Question # 4
Which has sweetish taste?
Choose an answer
N
2
O
NH
3
Cl
2
CO
2
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Question # 5
The brown gas formed when metal reduces HNO
3
is
Choose an answer
N
2
O
5
N
2
O
3
NO
2
NO
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Question # 6
Out of all the elements of group V1-A the highest melting and boiling points is shown by the element
Choose an answer
Te
Se
S
Pb
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Question # 7
Allotropic forms of oxygen Te, Se are
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Two
Three
Four
Five
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Question # 8
Specific gravity of HNO
3
is
Choose an answer
1.35
1.53
1.39
1.93
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Question # 9
Which element of group IV-A does not use d-orbital?
Choose an answer
N
P
As
Sb
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Question # 10
Which phosphorus is the most poisonous?
Choose an answer
White
Red
Black
All
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Question # 11
Calcium carbonates contains oxygen in it:
Choose an answer
48%
50%
53%
60%
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Question # 12
Colour of N
2
O
4
is
Choose an answer
Raddish brown
Yellow
Colouries
green
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Question # 13
Which are metalloid?
Choose an answer
Nitrogen and phosphorous
Arsenic and phosphorous antimony
Phosphorous and arsenic
Antimony and bismuth
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Question # 14
Laughing gas is chemically
Choose an answer
NO
N
2O
NO
2
N
2
O
4
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Question # 15
Which element belongs to group V-A?
Choose an answer
Cs
Ba
Sr
Bi
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Question # 16
Among group V-A elements, the most electronegative element is:
Choose an answer
Sb
N
P
As
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Question # 17
NO
2
forms acidic solution
Choose an answer
Red
Blue
Green
Brown
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Question # 18
Which is aqua regia?
Choose an answer
HCL : NO
HCl : HNO
3
HCl : H
2
SO
4
H
2
SO
4
: HNO
3
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Question # 19
Nitrogen is present in atmosphere by weight:
Choose an answer
75%
76%
77%
78%
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Question # 20
Which gas is heavier than air?
Choose an answer
CO
2
NH
3
Cl
2
CO
2
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Question # 21
Tungsten and Uranium are turned to an reaction with HNO
3
:
Choose an answer
Oxides
chlorides
Nitrides
Nitrates
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Question # 22
SO
3
is not absorbed in water directly to or H
2
SO
4
because
Choose an answer
the reaction does not go to completion.
the reaction is quite slow.
the reaction is exothermic.
SO
3
is insoluble in water.
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Question # 23
Group VI-A elements are called:
Choose an answer
Halogens
Electron deficient
alkaline earth metal
Chalcogens
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Question # 24
Which property is not present in non-metals:
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Predominantly covalent
Poor conductor
High E.N. Value
High electropositivity
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Question # 25
Which is an inert gas?
Choose an answer
Nitrogen
Oxygen
Hydrogen
CO
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Question # 26
SO
2
is not absorbed in water directly to or H
2
SO
4
because:
Choose an answer
The reaction does not go to completion
the reaction is quite slow
the reaction is exothemic
SO
3
is insolublein water
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Question # 27
Structure of P
4
is
Choose an answer
Trigonal
Tetragonal
Hexagonal
Monoclinic
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Question # 28
Aqua Regia has ration of conc. HCl and HNO
3
.
Choose an answer
1 : 2
1 : 3
1 : 4
2 : 3
Previous
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Next
Question # 29
Calcium carbonate contains oxygen in it
Choose an answer
48%
50%
53%
60%
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