Punjab 9th Class Chemistry Chapter 7 Electrochemistry Mcqs Test Online Punjab 9th Class Chemistry Chapter 7 Electrochemistry Punjab Class 9th 123456789105Chemistry 555555555 Question 1 of 10Chemistry 1. In which of the following changes, the nitrogen atom is reduced. N₂ to NO N₂ to NO₂ N₂ to NH₃ N₂ to HNO₃Question 1 of 10Question 2 of 10 2. Which of the following changes reaction is an example of oxidation Chlorine molecule to chloride ion Silver atoms to silver (I) ionOxygen molecule to oxide ion Iron (III) ion to iron (II) ion Question 2 of 10Question 3 of 10 3. Which of the following elements in the given reaction is reduced? ZnO + H₂ → Zn + H₂O H₂ ZnO Zn OQuestion 3 of 10Question 4 of 10 4. Consider the following reaction: H₂S + Cl₂ → 2HCl + S In this reaction H₂S behave as Reducing agent Oxidizing agent Catalyst ElectrolyteQuestion 4 of 10Question 5 of 10 5. The oxidation state of Cr in K₂Cr₂O₇ is 12 6 3 ZeroQuestion 5 of 10Question 6 of 10 6. Which of the following statement is not correct about the galvanic cell: Cations are reduced at cathode Anions are oxidized at anode Electrons flow from cathode to anode Oxidation occurs at anodeQuestion 6 of 10Question 7 of 10 7. Which of the following is not true about the Daniel cell: Half-cell of an active metal acts as cathode Half-cell contains an element in contact with its ions in aqueous solution A salt bridge connects the two half cells. A spontaneous oxidation-reduction reaction generates electricity.Question 7 of 10Question 8 of 10 8. Which of the following do not involve electrolytic process? Refining of copper Manufacture of sodium from NaCl Electroplating of steel Reduction of metal oxide by a reducing agentQuestion 8 of 10Question 9 of 10 9. Galvanizing is: Coating with Sn Coating with Zn Coating with Cr Coating with CuQuestion 9 of 10Question 10 of 10 10. Which of the following is true for the Nelson cell: Sodium metal is produced at anode Chlorine gas is produced at anode Hydrogen gas is produced at anode Sodium ions are not reduced at cathode Question 10 of 10 Loading... Test By Subject Punjab Test By Topics 9th Class Chemistry You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.