JEE Questions for Chemistry Class 11 P Block Elements Quiz 10 - MCQExams.com


Chemistry-Class 11 p Block Elements-2248.png
  • N2H4
  • 2)
    Chemistry-Class 11 p Block Elements-2249.png
  • NH2OH
  • NH3

Chemistry-Class 11 p Block Elements-2251.png

  • Chemistry-Class 11 p Block Elements-2252.png
  • 2)
    Chemistry-Class 11 p Block Elements-2253.png

  • Chemistry-Class 11 p Block Elements-2254.png

  • Chemistry-Class 11 p Block Elements-2255.png

Chemistry-Class 11 p Block Elements-2257.png
  • sp , sp3 and sp2 respectively
  • sp, sp2 and sp3 respectively
  • sp2, sp and sp3 respectively
  • sp2 , sp3 and sp respectively
Ammonia can be dried by
  • Conc. H2SO4
  • P4O10
  • CaO
  • Anhydrous CaCl2
A metal X on heating in nitrogen gas gives Y. Y on treatment with H2O gives a colourless gas which when passed through CuSO4 solution gives a blue colour. Y is
  • Mg(NO3)2
  • Mg3N2
  • NH3
  • MgO
Which of the following has odd number of electrons?
  • NO
  • CO
  • N2
  • CO2
O3 is used to purify water since it
  • Is paramagnetic
  • Absorbs harmful UV radiations
  • Is reducing
  • Destroys bacteria and viruses
  • Is allotrope of O2
Gold is insoluble in nitric acid but dissolves in aquaregia. The enhanced solubility of gold arises from
  • Oxidising strength of HNO3
  • 2)
    Chemistry-Class 11 p Block Elements-2260.png
  • Oxidising strength of H+
  • Au (NOformation
Treatment of CS2 with excess of Cl2gives
  • C2H5Cl
  • CCl4
  • CHCl3
  • Carbon black
Colemanite is
  • Na2B4O7.10H2O
  • Ca2B6O11.5H2O
  • NaBO2
  • H3BO3
  • Ca(BO2)2
graphite is
  • Molecular solid
  • Covalent solid
  • Ionic solid
  • Metallic solid
  • Amorphous solid
The aqueous solution/liquid that absorbs nitric oxide to a considerable extent is
  • Lead nitrate
  • Nitric acid
  • Ferrous sulphate
  • Sodium hydroxide
Which one of the following oxides of nitrogen is blue solid?
  • NO
  • N2O3
  • N2O
  • N2O5
Which one of the following reactions shows that nitrogen of the nitrate ion is reduced to -3 oxidation state?

  • Chemistry-Class 11 p Block Elements-2263.png
  • 2)
    Chemistry-Class 11 p Block Elements-2264.png

  • Chemistry-Class 11 p Block Elements-2265.png

  • Chemistry-Class 11 p Block Elements-2266.png
The correct order of bond angles in the molecules H2O, NH3, CH4 and CO2 is
  • H2O > NH3 > CH4 > CO2
  • H2O < NH3 < CO2 < CH4
  • H2O < NH3 > CO2 > CH4
  • H2O > NH3 < CH4 > CO2
What are the products obtained when ammonia is reacted with excess chlorine ?
  • N2 and NCl3
  • N2 and HCl
  • N2 and NH4Cl
  • NCl3 and HCl
What is the product formed when ozone reacts with mercury?
  • HgO
  • Hg2O2
  • Hg2O
  • HgO2
Which of the following molecules /ions are linear ?
Chemistry-Class 11 p Block Elements-2274.png
  • I and II
  • II and IV
  • I and III
  • III and IV
Specify the coordination geometry around and hybridization of N and B atoms in a 1:1 complex of BF3 and NH3
  • N : Tetrahedral, sp3; B ; tetrahedral sp3
  • N : Pyramidal, sp3 ; B ; Pyramidal sp3
  • N : Pyramidal, sp3; B : planar sp3
  • N : Pyramidal, sp3 : B : tetrahedral, sp3
Atomic orbitals of carbon involved in diamond structure are
  • sp-hybridized
  • sp2-hybridized
  • sp3-hybridized
  • Not hybridized

Chemistry-Class 11 p Block Elements-2275.png
  • 2, 2
  • 3, 1
  • 3, 1
  • 4, 0

Chemistry-Class 11 p Block Elements-2277.png

  • Chemistry-Class 11 p Block Elements-2278.png
  • 2)
    Chemistry-Class 11 p Block Elements-2279.png

  • Chemistry-Class 11 p Block Elements-2280.png

  • Chemistry-Class 11 p Block Elements-2281.png
Which one of the following is explosive and readily hydrolysed ?
  • NF3
  • NCl3
  • NH3
  • N2O3
Which of the following molecular species has unpaired electrons (s) ?
  • N2
  • F2

  • Chemistry-Class 11 p Block Elements-2284.png

  • Chemistry-Class 11 p Block Elements-2285.png
In case of nitrogen, NCl3 is possible but not NCl5 while in case of phosphorous, PCl3 as well as PCl5are possible . It is due to
  • Availability of vacant d-orbitals in P but not in N
  • Lower electronegativity of P than N
  • Lower tendency of H-bond formation in P than N
  • Occurrence of P in solid while N in gaseous states at room temperature
Graphite is a soft, solid lubricant; extremely difficult to melt .The reason for this anomalous behaviour is that graphite
  • Is an allotropic form of diamond
  • Has molecules of variable molecular masses like polymers
  • Has carbon atoms arranged in large plates of rings of strongly bound carbon atoms with weak interplate bonds
  • Is a non crystalline substance
Which one of the following compounds has the smallest bond angle in its molecule?
  • OH2
  • SH2
  • NH3
  • SO2
H3BO3is
  • Monobasic and weak Lewis acid
  • Monobasic and weak Bronsted acid
  • Monobasic and strong Lewis acid
  • Tribasic and weak Bronsted acid
Which one of the following compounds is not a protonic acid ?
  • B (OH)3
  • PO(OH)3
  • SO(OH)2
  • SO2(OH)2
The mixture of conc. HCl and HNO3 made in 3 : 1 ratio contains
  • ClO2
  • NOCl
  • NCl3
  • N2O4
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