JEE Questions for Chemistry Class 12 P Block Elements Quiz 14 - MCQExams.com

Which compound is related to haber’s process
  • CO2
  • H2
  • NO2
  • NH3
The carbonate which does not leave a residue on heating is
  • Na2CO3
  • PH3
  • SbH3
  • AsH3
Aquaregia is
  • 1 : 3 conc. HNO3 and conc.HCl
  • 1 : 2 conc. HNO3 and conc. HCl
  • 3 : 1 conc. HNO3 and conc. HCl
  • 2 : 1 conc. HNO3 and conc. HCl
Which of the following hydrides is least stable
  • AsH3
  • SbH3
  • NH3
  • PH3
Which has the lowest boiling point
  • NH3
  • PH3
  • AsH3
  • SbH3
Which is the most explosive
  • NCl3
  • PCl3
  • AsCl3
  • All
The most acidic is
  • AS2O3
  • P2O3
  • Sb2O3
  • Bi2O3
Non-existing compound is
  • PH4I
  • As2O3
  • SbCl2
  • As2H3
Pure N2 gas is obtained from
  • NH3 + NaNO2
  • NH4Cl + NaNO2
  • N2O + Ca
  • (NH4)2Cr2O7
Pure nitrogen can be prepared from
  • NH4OH
  • Ca3N2
  • NH4NO2
  • Ba(NO3)2
NO2 is released by heating
  • Pb(NO3)2
  • KNO3
  • NaNO2
  • NaNO3
Which of the following is neutral
  • N2O5
  • N2O3
  • N2O4
  • N2O
Which of the following is acidic
  • NH3
  • N2H4
  • N2H2
  • N3H
Laughing gas is prepared by heating
  • NH4Cl
  • (NH4)2SO4
  • NH4Cl + NaNO3
  • NH4NO3
Electrolysis temperature is maximum
  • AsH3
  • NH3
  • PH3
  • SbH3
On adding H2O to BiCl3 solution in HCl, the compound produced is
  • Bi2O3
  • Bi(OH) 3
  • BiOCl
  • BiOCl2
N, P , As, Sb , Bi elements belong to
  • VA Group
  • IV A Group
  • VII A Group
  • Hg(OH)2
Which of the following elements occur free in nature
  • Nitrogen
  • Phosphorus
  • Arsenic
  • Antimony
Which of the following elements of group VA does not show allotropy
  • N
  • Bi
  • P
  • As
Which is not easily soluble in water
  • H2
  • O2
  • SO2
  • CO2
The molecular formula of sulphur is
  • S
  • S2
  • S4
  • S8
All the elements of oxygen family are
  • Non – metal
  • Matalloids
  • Radioactive
  • Plymorphic
The triatomic species of element oxygen is known as
  • Azone
  • Polyzone
  • Trizone
  • Ozone
Which of the following acts as pickling agent
  • HNO3
  • HCl
  • H2SO4
  • HNO2
Which of the following is no suitable for use in dasiccator to dry substance
  • Conc H2SO4
  • Na2SO4
  • CaCl2
  • P4O10
The catalyst used in manufacture of by contact process
  • Al2O3
  • Cr2O3
  • V2O5
  • MnO2
Which of the following is the best scientific method to test presence of water in a liquid
  • Taste
  • Smell
  • use of litmus paper
  • use of anhydrous CaSO4
Which of the following sulphate is insoluble in water
  • CaSO4
  • CdSO4
  • PbSO4
  • Bi2(SO4)3
When sulphur is boiled with Na2SO3 solution, the compound formed is
  • Sodium Sulphide
  • Sodium Sulphate
  • Sodium persulphate
  • Sodium thiosulphate
Number of unpaired electrons in sulphur is
  • 2
  • 6
  • 8
  • 1
H2S reacts with O2 in restricted supply of O2 to form

  • Chemistry-Class 12 p Block Elements-2791.png
  • 2)
    Chemistry-Class 12 p Block Elements-2792.png

  • Chemistry-Class 12 p Block Elements-2793.png

  • Chemistry-Class 12 p Block Elements-2794.png
Which of the following mixture is chromic acid

  • Chemistry-Class 12 p Block Elements-2796.png
  • 2)
    Chemistry-Class 12 p Block Elements-2797.png

  • Chemistry-Class 12 p Block Elements-2798.png

  • Chemistry-Class 12 p Block Elements-2799.png

Chemistry-Class 12 p Block Elements-2800.png

  • Chemistry-Class 12 p Block Elements-2801.png
  • 2)
    Chemistry-Class 12 p Block Elements-2802.png

  • Chemistry-Class 12 p Block Elements-2803.png

  • Chemistry-Class 12 p Block Elements-2804.png
Which of the element of the oxygen family is most poisonous to human race
  • O
  • S
  • Se
  • None
Super phosphate is the mixture of
  • Calcium phosphate and H2SO4
  • Sodium phosphate and H2SO4
  • Potassium phosphate and H2SO4
  • None
Which of the following dissociates to give H + easily
  • H2O
  • H2S
  • H2Te
  • H2Se
H2SO4 reacts with PCl5 to give
  • Thoinyl chloride
  • Sulphur monochloride
  • Sulphur chloride
  • Sulphur utrachloride
Among H2O, H2S, H2Se and H2Te the one with highest boiling point
  • H2O
  • H2Te
  • H2S
  • H2Se
Which of the following is used in artificial respiration

  • Chemistry-Class 12 p Block Elements-2807.png
  • 2)
    Chemistry-Class 12 p Block Elements-2808.png

  • Chemistry-Class 12 p Block Elements-2809.png
  • All of these
Carbogen is
  • Pureform of C
  • 2)
    Chemistry-Class 12 p Block Elements-2810.png

  • Chemistry-Class 12 p Block Elements-2811.png

  • Chemistry-Class 12 p Block Elements-2812.png
The products of the chemical reaction between Na2S2O3, Cl2 and H2O are

  • Chemistry-Class 12 p Block Elements-2813.png
  • 2)
    Chemistry-Class 12 p Block Elements-2814.png

  • Chemistry-Class 12 p Block Elements-2815.png

  • Chemistry-Class 12 p Block Elements-2816.png
The incorrect statement among the following is
  • C60 is an allotropic form of carbon
  • O3 is an allotropic form of oxygen
  • S8 is only allotropic form of sulphur
  • Red phosphorous is more stable in air than while phosphorous
Hypo is used in photography because of its
  • Reducing behavior
  • Oxidising behavior
  • Complex forming behavior
  • Reaction with light
Aqueous solutions of H2S and SO2 when mixed together yield
  • Sulphur and water
  • Sulphur trioxide and water
  • Hydrogen peroxide and sulphur
  • Hydrogen and sulphurous acid
An example of a neutral oxide is
  • No
  • CO2
  • CaO
  • ZnO
Which of the following is used to absorb sulphur dioxide
  • Conc H2SO4
  • KOH Solution
  • Water
  • Anhydrous CaCl2
Which of the following is oxidized by SO2
  • Mg
  • K2Cr2O7
  • KMnO4
  • All
A salt of sulphurous acid is called
  • Sulphate
  • Sulphurate
  • Sulphite
  • Sulphid
The final acid obtained during the manufacture of H2SO4 by contact process
  • H2SO4(conc.)
  • H2SO4(dil)
  • H2SO4
  • H2S2O7
Which compound acts as an oxidizing as well as reducing agent
  • SO2
  • MnO2
  • Al2O3
  • CrO3
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