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Online Tests
ECAT Chemistry Chapter 15 Group IV-A and VI-A Elements Online Test MCQs With Answers
Question # 1
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 # 2
Among group V-A elements, the most electronegative element is:
Choose an answer
Sb
N
P
As
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Question # 3
Which is nitrous acid?
Choose an answer
HNO
3
HNO
HNO
2
H
2
NO
3
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Question # 4
Laughing gas is chemically
Choose an answer
NO
N
2O
NO
2
N
2
O
4
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Question # 5
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 # 6
Which is the most reactive?
Choose an answer
White phosphorus
Red Phosphorus
Graphite
Plastic sulphur
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Question # 7
Which gas is heavier than air?
Choose an answer
CO
2
NH
3
Cl
2
CO
2
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Question # 8
Colour of PCl
5
is:
Choose an answer
Red
Yellowish White
Grey
Colourless
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Question # 9
What are non-metals?
Choose an answer
Sb & Bi
P & Bi
N & P
As & N
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Question # 10
Nitrogen is present in atmosphere
Choose an answer
21%
36%
78%
89%
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Question # 11
Which element of group IV-A does not use d — orbital?
Choose an answer
N
P
As
Sb
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Question # 12
Which property is not present in non-metals:
Choose an answer
Predominantly covalent
Poor conductor
High E.N. Value
High electropositivity
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Question # 13
Nitrogen is present in atmosphere
Choose an answer
21%
36%
78%
89%
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Question # 14
Tungsten and uranium are turned to an reaction with HNO
3
Choose an answer
Oxides
Chlorides
Nitrides
Nitrates
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Question # 15
Bone ash contains calcium phosphate
Choose an answer
70%
80%
90%
100%
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Question # 16
Ring testis given by ions.
Choose an answer
Nitrides
Nitrates
Cyanates
Nitriles
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Question # 17
Which element of group IV-A does not use d-orbital?
Choose an answer
N
P
As
Sb
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Question # 18
Which has sweetish taste?
Choose an answer
N
2
O
NH
3
Cl
2
CO
2
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Question # 19
Which has garlic like odour?
Choose an answer
N
2
O
NO
NO
2
NH
4
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Question # 20
Specific gravity of HNO
3
is
Choose an answer
1.35
1.53
1.39
1.93
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Question # 21
Out of all the elements of group V-A, the highest ionization energy is possessed by
Choose an answer
N
P
Sb
Bi
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Question # 22
Which property is not present in non-methals
Choose an answer
Predominantly covalent
Poor conductor
Hig E.N. value
High electropositivity
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Question # 23
Out of all the elements of group V-A , the highest ionization energy is possessed by:
Choose an answer
N
P
Sb
Bi
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Question # 24
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 # 25
Colour of N
2
O
4
is
Choose an answer
Raddish brown
Yellow
Colouries
green
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Question # 26
Which phosphorus is the most poisonous?
Choose an answer
White
Red
Black
All
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Question # 27
Nitrogen is present in atmosphere by weight:
Choose an answer
75%
76%
77%
78%
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Question # 28
Nitrogen is present in atmosphere by weight
Choose an answer
75%
76%
77%
78%
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Question # 29
Structure of P
4
is
Choose an answer
Trigonal
Tetragonal
Hexagonal
Monoclinic
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Question # 30
Among group V-A elements, the most electronegative element is
Choose an answer
Sb
N
P
As
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