Chemistry Ix Chapter 7 MCQs

10 Questions | Total Attempts: 42

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Chemistry Ix Chapter 7 MCQs


Questions and Answers
  • 1. 
    In which of the following changes the nitrogen atom is reduced? 
    • A. 

      Nto NO

    • B. 

      Nto NO2

    • C. 

      Nto NH3

    • D. 

      Nto HNO3

  • 2. 
    Which of the following reaction is an example of oxidation?
    • A. 

      Chlorine molecule to chloride ion

    • B. 

      Silver atom tosilver (I) iron

    • C. 

      Oxygen molecule to oxide ion

    • D. 

      Iron (III) ion to iron (II) ion

  • 3. 
    Which of the following element in the given reaction is reduced? Zn + H---------------> Zn + H2O
    • A. 

      H2

    • B. 

      ZnO

    • C. 

      Zn

    • D. 

      O

  • 4. 
    Consider the following reaction H2S + Cl-----------------> 2HCl in this reaction how H2S behave as? 
    • A. 

      Reducing agent

    • B. 

      Oxidizing agent

    • C. 

      Catalyst

    • D. 

      Electrolyte

  • 5. 
    The oxidation state of Cr in K2Cr2Ois?
    • A. 

      12

    • B. 

      6

    • C. 

      3

    • D. 

      Zero

  • 6. 
    Which of the following statement is not correct about the Galvanic cell?
    • A. 

      Cadence are produced at cathode

    • B. 

      A9 are oxidized at anode

    • C. 

      Electrons flow from cathode to anode

    • D. 

      Oxidation occurs at anode

  • 7. 
    Which of the following statement is not true about Danielle about Daniel cell
    • A. 

      Half cell of an active metal x as cathode

    • B. 

      Half cell contains an element in contact with its own ions in aqueous solution

    • C. 

      ASR Bridge connects the two half cells

    • D. 

      Spontaneous oxidation reduction reaction generates electricity

  • 8. 
    Which of the following do not involve electrolytic process? 
    • A. 

      Refining of copper

    • B. 

      Manufacturing of sodium from NaCl

    • C. 

      Electroplating of Steel

    • D. 

      Reduction of metal oxide by a reducing agent

  • 9. 
    Galvanizing is?
    • A. 

      Coating with Sn

    • B. 

      Coating with Zn

    • C. 

      Coating with Cr

    • D. 

      Coating with Cu

  • 10. 
    Which of the following is true for Nelson cell?
    • A. 

      Sodium metal is produced at anode

    • B. 

      Chlorine gas is produced at anode

    • C. 

      Hydrogen gas is produced at anode

    • D. 

      Sodium ions are  reduced at cathode

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