JEE Questions for Chemistry Class 11 P Block Elements Quiz 6 - MCQExams.com

The gas which burns with a blue flame is
  • H2
  • CO
  • CO2
  • SO2
Nessler’s reagent is used for the detection of

  • Chemistry-Class 11 p Block Elements-2160.png
  • 2)
    Chemistry-Class 11 p Block Elements-2161.png

  • Chemistry-Class 11 p Block Elements-2162.png

  • Chemistry-Class 11 p Block Elements-2163.png
Ostwald’s process for the manufacture of nitric acid involves
  • Oxidation of N2 to NO
  • Oxidation of NH3 to NO
  • Combination of N2 and H2
  • Passage of steam over red hot coke
When iron is heated with conc. HNO3
  • NO is formed
  • N2O is formed
  • H2 is evolved
  • It becomes passive
Which of the following metals is/are rendered passive on treatment with conc. HNO3?
  • Iron
  • Aluminium
  • Chromium
  • All

Chemistry-Class 11 p Block Elements-2166.png
  • Adding NH3 to the equilibrium mixture
  • Removing NH3 from the equilibrium mixture
  • Increasing the concentration of N2, H2 and NH3 equally
  • None of the above
The gas obtained when bleaching powder is treated with warm concentrated solution of NH3 is
  • Cl2
  • N2
  • NO
  • H2
Which of the following is a solid compound ?
  • N2O
  • N2O4
  • NO
  • N2O5
Nitrous oxide is formed by heating
  • HNO3
  • NH4NO3
  • AgNO3
  • NH4NO2
Which of the following oxides of nitrogen is obtained when copper is heated with concentrated nitric acid ?
  • N2O5
  • N2O
  • NO2
  • NO
Which of the following elements has the greatest tendency to form A3- ions ?
  • Phosphorus
  • Nitrogen
  • Bismuth
  • Antimony
Concentrated HNO3 oxidises phosphorus to
  • H3PO4
  • H3PO3
  • H4P2O7
  • H3PO2
Laughing gas is prepared by heating
  • NH4Cl
  • NH4NO2
  • NH4Cl + NaNO3

  • Chemistry-Class 11 p Block Elements-2171.png

Chemistry-Class 11 p Block Elements-2172.png
  • Behaves as a base
  • Acts as an acid
  • Acts as an oxidising agent
  • Acts as a reducing agent
The ammonium compound which gives NH3 on heating is
  • NH4NO3
  • NH4NO2

  • Chemistry-Class 11 p Block Elements-2173.png

  • Chemistry-Class 11 p Block Elements-2174.png
Dioxygen present in the atmosphere is believed to be produced by
  • Sun
  • Photosynthesis
  • Water
  • Air
Potassium permanganate on heating gives
  • K2MnO4
  • MnO2
  • O2
  • All
Which of the following is not an acidic oxide ?
  • CO2
  • CO
  • NO2
  • P2O2
Which of the following is not a neutral oxide ?
  • H2O
  • V2O5
  • CO
  • NO
Which of the following compounds does not give oxygen on heating ?
  • HgO
  • KMnO4

  • Chemistry-Class 11 p Block Elements-2178.png
  • KClO3
Which of the following is the dioxygenyl ion ?
  • O2
  • 2)
    Chemistry-Class 11 p Block Elements-2180.png

  • Chemistry-Class 11 p Block Elements-2181.png

  • Chemistry-Class 11 p Block Elements-2182.png
Ordinary oxygen contains
  • Only O16 isotopes
  • Only O17 isotopes
  • A mixture of O16 and O18 isotopes
  • A mixture of O16. O17 and O18 isotopes
The substance which does not liberate oxygen on treatment with ozone is
  • PbS
  • H2S
  • SO2
  • Hg
A large part of the harmful UV radiations of the sun does not reach the surface of the earth. This is because in the upper atmosphere, there is a layer of
  • O3
  • CO2
  • SO2
  • NO
Moist iodine reacts with ozone to give
  • HI
  • HIO3
  • I2O4
  • I2O5
Ozone is
  • An oxidant
  • A reductant
  • Oxidant as well as reductant
  • An acid
Which of the following is a true acidic anhydride ?
  • CO
  • NO
  • ClO2
  • N2O5
The reddish brown gas formed when nitric oxide is oxidised by air is
  • N2O5
  • N2O4
  • NO2
  • N2O3
When conc. HNO3 is heated with P2O5 it forms
  • N2O
  • NO
  • NO2
  • N2O5
The catalyst used in manufacture of HNO3 by Ostwald’s process is
  • Platinum black
  • Finely divided nickel
  • Vanadium pentoxide
  • Platinum gauze
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