Q.1
Which of the following is used as as an oxidising agent in the laboratory?
  • a) Lead acetate
  • b)Lead hydride
  • c) Basic lead carbonate
  • d) Lead tetraacetate
Q.2
Calcium does not combine directly with ...
  • a) C
  • b) O
  • c) N
  • d) H
Q.3
Anhydrous stanus chloride can be prepared by
  • a) Passing Cl2 over fused tin
  • b) Heating stannous chloride dihydrate
  • c) Reducing stannic chloride with mercury
  • d) Heating tin in a current of HCl vapour
Q.4
Pb and and Sn are extracted for there chief ores by [ IIT 2004 screening]
  • a) Carbon reduction and self reduction respectively
  • b) self reduction and carbon reduction respectively
  • c) electrolysis and self reduction respectively
  • d) self reduction and electrolysis respectively
Q.5
C(OH)4 is unstable here as Si(OH)4 is stable because
  • a) Si - O bond energy is high than C - O
  • b) C - O bond energy is high than Si - O
  • c) C don't have lone pair electrons
  • d) Si have lone pair electrons
Q.6
Which of the following is covalent carbide
  • a) SiC
  • b)Ca2C
  • c) Al4C3
  • d) noe of the baove
Q.7
Which of the following is called sesquioxide
  • a) PbO
  • b) PbO2
  • c) Pb3O4
  • d) Pb2O3
Q.8
SnO2 used in preparation of
  • a) Cutting tools
  • b) To increase electrical conductivity
  • c) To polish surface
  • d) to prepare glass vessel
Q.9
Lead dioxide is obtained when
  • a) Lead is heated in air
  • b) Lead lead is treated with nitric acid
  • c) Lead Chloride is treated with KOH
  • d) Read lead treated with H2SO4
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