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