JEE Questions for Chemistry Class 11 P Block Elements Quiz 14 - MCQExams.com

Which of the following hydroxides is acidic ?
  • B(OH)3
  • Al(OH)3
  • Ga(OH)3
  • TIOH
Which of the following carbides on treatment with water evolves methane ?
  • CaC2
  • Al4C3
  • B4C
  • SiC
Which of the following is not correct ?
  • In Hall’s process, bauxite is fused with Na2CO3
  • In Baeyer’s process, bauxite is digested with NaOH Solution
  • In Serpeck’s process bauxite is mixed with coke and heated in an atmosphere of CO2
  • Hoope’s electrolytic cell is used for purification of aluminium.
Which of the following is a covalent compound ?
  • Al2O3
  • AlF3
  • AlCl3
  • Al2(SO4)3
Aqueous NaOH cannot be used as a precipiating reagent for Al3+ ions as Al(OH)3 because
  • NaOH is a weak base
  • NaOH is non – ionizable

  • Chemistry-Class 11 p Block Elements-2321.png

  • Chemistry-Class 11 p Block Elements-2322.png
Which of the following statements is correct?
  • BCl3 and AlCl3 are both Lewis acids and BCl3 is stronger than AlCl3
  • BCl3 and AlCl3 are both Lewis acids and AlCl3 is stronger than BCl3
  • BCl3 and AlCl3 are both equally strong Lewis acids
  • Both BCl3 and AlCl3 are not Lewis acids.
The dissolution of Al(OH)3 by a solution of NaOH results in the formation of
  • [Al(H2O)4 (OH)2 ]+
  • [Al(H2O)3 (OH)3]
  • [Al(H2O)2 (OH)4 ]–
  • [Al (H2O)6] (OH)3
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