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Online Tests
ECAT Chemistry Chapter 15 Group IV-A and VI-A Elements Online Test MCQs With Answers
Question # 1
Structure of P
4
is
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Trigonal
Tetragonal
Hexagonal
Monoclinic
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Question # 2
What are non-metals?
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Sb & Bi
P & Bi
N & P
As & N
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Question # 3
All elements of group VI-A non-metal except
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Te
S
Se
Po
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Question # 4
Formation of NO from N
2
and O
2
requires temp
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30
0
C
300
0
C
3000
0
C
30000
0
C
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Question # 5
Out of all the elements of group V1-A the highest melting and boiling points is shown by the element
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Te
Se
S
Pb
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Question # 6
Calcium carbonates contains oxygen in it:
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48%
50%
53%
60%
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Question # 7
Which gas is heavier than air?
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CO
2
NH
3
Cl
2
CO
2
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Question # 8
Which is aqua regia?
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HCL : NO
HCl : HNO
3
HCl : H
2
SO
4
H
2
SO
4
: HNO
3
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Question # 9
Group VI-A elements are called:
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Halogens
Electron deficient
alkaline earth metal
Chalcogens
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Question # 10
Nitrogen is present in atmosphere
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21%
36%
78%
89%
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Question # 11
Allotropic forms of phosphorus are
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three
four
five
six
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Question # 12
Out of all the elements of group V-A , the highest ionization energy is possessed by:
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N
P
Sb
Bi
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Question # 13
Oxidation of NO in air produces
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N
2
O
N
2
O
3
N
2
O
4
N
2
O
5
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Question # 14
Ring testis given by ions.
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Nitrides
Nitrates
Cyanates
Nitriles
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Question # 15
Allotropic forms of oxygen Te, Se are
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Two
Three
Four
Five
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Question # 16
Calcium carbonate contains oxygen in it
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48%
50%
53%
60%
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Question # 17
Which element of group IV-A does not use d-orbital?
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N
P
As
Sb
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Question # 18
Among group V-A elements, the most electronegative element is
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Sb
N
P
As
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Question # 19
Which is an inert gas?
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Nitrogen
Oxygen
Hydrogen
CO
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Question # 20
Bone ash contains calcium phosphate
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70%
80%
90%
100%
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Question # 21
NO
2
forms acidic solution
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Red
Blue
Green
Brown
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Question # 22
Laughing gas is chemically
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NO
N
2O
NO
2
N
2
O
4
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Question # 23
Which catalyst is used in contact process?
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Fe
2
O
3
V
2
O
5
SO
3
Ag
2
O
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Question # 24
Nitrogen is present in atmosphere by weight:
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75%
76%
77%
78%
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Question # 25
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 # 26
SO
2
is not absorbed in water directly to or H
2
SO
4
because:
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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
Nitrogen is present in atmosphere by weight
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75%
76%
77%
78%
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Question # 28
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 # 29
Out of all the elements of group V-A, the highest ionization energy is possessed by
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N
P
Sb
Bi
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