• 1. 
    According to Bronsted law, water is a/an

  • acid
  • base
  • both acid and base
  • none of the above
  • 2. 
    The oxidation number of chlorine in HClO4

  • +5
  • +6
  • +7
  • +8
  • 3. 
    According to Bronsted-Lowry concept, base is a substance which is

  • proton acceptor
  • electron pair acceptor
  • proton donor
  • electron pair donor
  • 4. 
    Lewis base among the following

  • NH3
  • H2O
  • CN
  • all the above
  • 5. 
    Effect of acid and bases on non aqueous solvent was not explained by

  • lewis concept
  • lowery bronsted theory
  • arrhenius theory
  • none of the above
  • 6. 
    In coordination compounds , the ligands act as

  • lewis acid
  • lewis base
  • arrhenius acid
  • arrhenius base
  • 7. 
    BF3 acts as an acid according to

  • arrhenius theory
  • lowery bronsted
  • lewis
  • all the above
  • 8. 
    The aqueous solutions of sodium formate, anilinium chloride and potassium cyanide are respectively

  • acidic, acidic, basic
  • basic, acidic, basic
  • basic, neutral, basic
  • none
  • 9. 
    Which of these is not likely to act as lewis base?

  • BF3
  • PF3
  • CO
  • F–
  • 10. 
    When aqueous ammonia is added to CuSO4 solution, the solution turns deep blue

  • NH3 replaces H2O
  • H2O replaces NH3
  • NH3 remains
  • H2O remains
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