Chapter 7 Electrochemistry Chemistry 9th Class Sindh MCQ Tests
9th Class Chemistry Chapter 7 MCQ Tests
Chapter 7 of 9th Class Chemistry has 25 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 25
Total Marks: 25
Time: 25 Mins
Total Questions: 25
Total Marks: 25
Time: 25 Mins
25Min : 00 Sec Remaining
Question # 1
Loss of hydrogen atom by an element is called _____.
Question # 2
Which of the following statements is/are true for all voltaic/galvanic cells?
(I) Reduction occurs at the cathode.
(II) The anode gains mass during discharge.
(III) The voltage is less than or equal to zero.
Question # 3
During electroplating of chromium on steel, the anode usually used is made up of _____.
Question # 4
Electrolysis of sodium chloride is done in _____.
Question # 5
What is the purpose of porous asbestos lining in the Nelson cell during manufacture of NaOH from brine?
Question # 6
What is the purpose of porous asbestos lining in the Nelson cell during manufacture of NaOH from brine?
Question # 7
Zn → Zn + 2 + 2e−
Which of the following is true about this reaction.
Question # 8
An experimental setup is shown in the figure. The figure (b) represents a solution for _____.
Question # 9
2 ZnO + C → 2 Zn + CO2
Which of the following species is oxidized in this reaction?
Question # 10
Sodium metal is extracted from its ore using the Down\'s cell. In what two ways the products can be prevented from recombining after they have been formed by electrolysis?
Question # 11
Gain of oxygen atoms by an element is called _____.
Question # 12
Salt bridge transfers _____ to two half cells in a galvanic cell.
Question # 13
Brine is another name for _____.
Question # 14
Another name for sodium hydroxide is _____.
Question # 15
A sheet of pure copper is used at _____.
Question # 16
Fe2O3 + CO → Fe + CO2
In the following equation, oxygen gets _____.
Question # 17
The desired product in the electrolysis of molten sodium chloride is _____.
Question # 18
When water is electrolyzed, gas collected at cathode is _____.
Question # 19
Corrosion is an example of _____.
Question # 20
The rusting of iron is catalyzed by which one of the following?
Question # 21
Which of the following cells is used for the manufacture of NaOH?
Question # 22
An electrochemical cell is also called _____.
Question # 23
In Nelson cell, the cathode used is made up of _____.
Question # 24
Food cans are coated with tin and not with zinc because _____.
Question # 25
In Nelson cell, the cathode used is made up of _____.
Total Questions
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Question # 1
Loss of hydrogen atom by an element is called _____.
Question # 2
Which of the following statements is/are true for all voltaic/galvanic cells?
(I) Reduction occurs at the cathode.
(II) The anode gains mass during discharge.
(III) The voltage is less than or equal to zero.
Question # 3
During electroplating of chromium on steel, the anode usually used is made up of _____.
Question # 4
Electrolysis of sodium chloride is done in _____.
Question # 5
What is the purpose of porous asbestos lining in the Nelson cell during manufacture of NaOH from brine?
Question # 6
What is the purpose of porous asbestos lining in the Nelson cell during manufacture of NaOH from brine?
Question # 7
Zn → Zn + 2 + 2e−
Which of the following is true about this reaction.
Question # 8
An experimental setup is shown in the figure. The figure (b) represents a solution for _____.
Question # 9
2 ZnO + C → 2 Zn + CO2
Which of the following species is oxidized in this reaction?
Question # 10
Sodium metal is extracted from its ore using the Down\'s cell. In what two ways the products can be prevented from recombining after they have been formed by electrolysis?
Question # 11
Gain of oxygen atoms by an element is called _____.
Question # 12
Salt bridge transfers _____ to two half cells in a galvanic cell.
Question # 13
Brine is another name for _____.
Question # 14
Another name for sodium hydroxide is _____.
Question # 15
A sheet of pure copper is used at _____.
Question # 16
Fe2O3 + CO → Fe + CO2
In the following equation, oxygen gets _____.
Question # 17
The desired product in the electrolysis of molten sodium chloride is _____.
Question # 18
When water is electrolyzed, gas collected at cathode is _____.
Question # 19
Corrosion is an example of _____.
Question # 20
The rusting of iron is catalyzed by which one of the following?
Question # 21
Which of the following cells is used for the manufacture of NaOH?
Question # 22
An electrochemical cell is also called _____.
Question # 23
In Nelson cell, the cathode used is made up of _____.
Question # 24
Food cans are coated with tin and not with zinc because _____.
Question # 25
In Nelson cell, the cathode used is made up of _____.
Total Questions
12345678910111213141516171819202122232425
Chemistry MCQ Test by Topics
- +7.1 OXIDATION AND REDUCTION REACTIONS
- +7.1.1 Oxidationand Reduction in Terms of Loss or Gain of Electron
- +7.2 OXIDATION STATE AND RULES FOR ASSIGNING OXIDATION STATE
- +7.2.1 Rules for Assigning Oxidation Numbers (O.N.)
- +7.3 OXIDIZING AND REDUCING AGENTS
- +7.4 OXIDATION -REDUCTION REACTIONS
- +7.5 ELECTROCHEMICAL CELLS
- +7.5.1 Concept of Electrolytes
- +7.5.2 Electrolytic cells
- +7.5.2.1 Construction of an Electrolytic Cell
- +7.5.2.2 Working of an Electrolytic Cell
- +7.5.2.3 Electrolysis of Water
- +7.5.3 Galvanic Cell
- +7.5.3.2 Working of the Cell
- +7.6 ELECTROCHEMICAL INDUSTRIES
- +7.6.1 Manufacture of Sodium Metal from Fused NaCl
- +7.6.1.1 Working of Downs Cell
- +7.6.2 Manufacture of NaOH from Brine
- +7.7 CORROSION AND ITS PREVENTION
- +7.7.1 Rusting of Iron
- +7.7.2 Prevention of Corrosion
- +7.7.2.1 Removal of stains
- +7.7.2.2 Paints and greasing
- +7.7.2.3 Alloying
- +7.7.2.3 7 .7.2.4 Metallic coating
- +7.7.3.1 Zinc coating or Galvanizing
- +7.7.3.2 Tin Coating
- +7.7.4.1 Electroplating of Silver
- +7.7.4.2 Electroplating of Chromium
- +7.7.4.3 Electroplating of zinc
- +7.7.4.4 Electroplating of tin
- +7.7.4.5 Electrolytic refining of copper
Chemistry
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Updated on: 01-09-2026
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