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Online Tests
Chemistry Fsc Part 2 Chapter 4 Online Test MCQs With Answers
Question # 1
In group V-A elements the most electronegative elements is
Choose an answer
Sb
N
P
As
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Question # 2
Which one is metaphosphoric acid
Choose an answer
HPO3
H3PO3
H3PO4
H4P2O7
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Question # 3
When concentrated H2SO4 and solid sodium chloride react together at room temperature the product are.
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Two salts only
A salt and a base
A salt and an acid
A salt and water
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Question # 4
Role of H2S in the given chemical reaction is H2S + I2--------------- 2HI+S
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Oxidising agent
Reducing agent
Dehydrating agent
As an acid
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Question # 5
An element has oxidation state -2, +4, +6 in its compounds. In which group in the periodic table is this element likely to be.
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Grooup III A
Group IV A
Group V A
Group VI A
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Question # 6
Lowest oxidation state of nitrogen is present in.
Choose an answer
NH3
NO2
NO
HNO3
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Question # 7
Which metal is redered passive by HNO
3
due to formation of a film of metal oxide over the metal
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Pt
Sn
CO
Mn
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Question # 8
What is %age of calcium phosphate in bone ash
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20
40
80
60
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Question # 9
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 # 10
The brown gas formed when metal reduces HNO
3
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N
2
O
5
N
2
O
3
NO
2
NO
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Question # 11
Which element does not have allotropic form
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Nitrogen
Phosphorous
Arsenic
Antimony
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Question # 12
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 # 13
P2O5 is usually used as
Choose an answer
Drying agent only
Reducing agent
Both drying and reducing agent
Both drying agent and oxidizing agent.
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Question # 14
Arsenic impurities in contact process are removed.
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By prolong heating the gases
By treatment with Fe(OH)3
In scrubbing tower
In absorption tower
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Question # 15
The element which is present in earth crust about 50% is
Choose an answer
Oxygen
sulphur
Carbon
Nitrogen
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Question # 16
The reaction between Cu and conc. H2SO4 produces
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SO3
SO2
H2
Cu + ions
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Question # 17
The most electronegative element of group V-A is
Choose an answer
N
P
Sb
Bi
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Question # 18
When Cu reacts with conc. HNO3 , which one of the following gases is evolved
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N2O
NO
NO2
N2O5
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