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Class 12 Chemistry
The P – Block Elements Chapter 7
Quiz 1
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Which of the following compound is not known?
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NCl5
0%
NCl3
0%
PCl5
0%
AsCl5
Nitrogen is relatively inactive element because:
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It has low atomic radius.
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Its electronegativity is fairly high.
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Dissociation energy of its molecule is fairly high.
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It has a stable electronic configuration.
Nitric acid does not react with which of the following metals?
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Iron
0%
Copper
0%
Zinc
0%
Chromium
Oxidation number of nitrogen in nitrate ion is:
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+4
0%
+3
0%
+2
0%
+5
Which one of the following nitrogen oxides is an anhydride of nitrous acid ?
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NO
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N2O3
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N2O4
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N2O
Out of the following which one gives Brown Ring Test?
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N2O5
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NO2-
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NO
0%
NO3-
Which acid is formed when concentrated nitric acid reacts with sulphur?
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Nitrous acid
0%
Sulphurous acid
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Per sulphuric acid
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Sulphuric acid
On a large scale, ammonia is manufactured by:
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Dow's process
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Haber's process
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Contact process
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Ostwald's process
The covalency of nitrogen in N2O5 is:
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5
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2
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4
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1
Which of the following oxides of nitrogen can dimerise?
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N2O3
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NO2
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NO
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N2O
Which of the following is used as a catalyst in Haber's process?
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Chromium
0%
Copper
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Platinum
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Iron
What is the oxidation number of N in NO?
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+4
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+1
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+5
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+2
Which one acts as both oxidising as well as reducing agent?
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HCl
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HNO3
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H2SO4
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HNO2
In hydrazine N2H4 , the oxidation number of N is:
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-1
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-2
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+2
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-3
Ostwald's process is used to manufacture:
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Nitric acid
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Nitrous acid
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Sulphuric acid
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Ammonia
The conditions required to maximize the yield of ammonia are:
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High pressure and moderate temperature (~700 K)
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Very low pressure and moderate temperature
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High pressure and low temperature
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Low pressure and low temperature
Ammonia is:
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Both a weak Bronsted base and a weak Lewis base.
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Only a weak Bronsted base.
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Only a weak Lewis base.
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A strong Bronsted base and a weak Lewis base.
In ammonia the oxidation number of N is:
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-3
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3
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2
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-2
Which of the following forms a diatomic molecule?
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Arsenic
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Phosphorus
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Antimony
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Nitrogen
Which one of the following does not describe Nitrogen?
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High electronegativity
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Forms multiple bonds
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Highly reactive
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No usable d -orbitals
0 h : 0 m : 1 s
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