9th Chemistry Unit 8 Electrochemistry MCQs Sindh Board

9th Grade Chemistry Chapter 8 Electrochemistry Sindh Board MCQs Notes Online Chapter Wise Question Answers. Sindh Boards Chemistry Subject Notes For Exams Preparations Karachi, Jamshoro, Sindh Boards. Chemistry class Ninth sindh board notes Unit 8 Electrochemistry Most Repeated Multiple Choice Questions With Answers. Chemistry notes for class IX sindh board karachi Boards.

9th Chemistry MCQs

Q.1: The branch of chemistry that deals with the study of relationship between electrical and chemical energy is called:?

1. Physical chemistry
2. Electrochemistry
3. Analytical chemistry
4. Thermo chemistry

B

Q.2: The substance used for electrolysis is called:?

1. Electrolyte
2. None of these
3. Non- electrolyte
4. Electrolytic solution

A

Q.3: Sodium chloride melts at?

1. 800^oC
2. 700^oC
3. 850^oC
4. 75 0^oC

A

Q.4: Electrodes are made of?

1. alloys
2. non metals
3. metals
4. metalloids

C

Q.5: The quantity of charge which deposits or liberates exactly one gram equivalent of a substance is?

1. Coulomb
2. Ampere
3. Faraday
4. Electro chemical equivalent

C

Q.6: The process of coating one metal onto another is called?

1. rusting
2. electroplating
3. none of these
4. Electro chemical process

B

Q.7: One Faraday is equivalent to?

1. 95600 Coulombs
2. 96500 Coulombs
3. 96550 Coulombs
4. 96000 Coulombs

B

Q.8: Which one of these is not electrolyte?

1. Acidulated water
2. Sugar
3. Sodium chloride solution
4. Sodium hydroxide solution

B

Q.9: The unit of electro chemical equivalent is?

1. G/coulomb
2. Ampere
3. Kg\coulomb
4. Coulomb

C

Q.10: In dry cell electrolyte is the moist paste of?

1. NH₄Cl + ZnSO₄
2. MnO₂ + ZnCl₂
3. NH₄CI + MnO₂
4. NH₄Cl ZnCI₂

D

Q.11: A weak electrolyte is:?

1. Sulphruic
2. Citric acid
3. Nitric acid
4. A caustic alkali

B

Q.12: The electrolysis of fused sodium chloride is carried out in:?

1. Voltaic cell
2. Dry cell
3. Downs cell
4. Galvanic cell

C

Q.13: The electrodes used in the electrolytic cell to carry out electrolysis of water are made of:?

1. Copper
2. Carbon
3. Graphite
4. Platinum

D

Q.14: During electrolysis of which hydrogen is released at the cathode and oxygen is released at the anode?

1. NaCl
2. HgO
3. Water
4. H₂O₂

C

Q.15: One Faraday has?

1. 92,500 C
2. 94,500 C
3. 93,9500 C
4. 96\,500 C

D

Q.16: The deposition of a metal on another metal is called:?

1. Reduction
2. Electrolysis
3. Electroplating
4. Oxidation

C

Q.17: In electroplating, the thing to be electroplated is made the:?

1. Anode
2. Cathode
3. Electrolyte
4. Electrolytic cell

B

Q.18: In which cells, oxidation loss of electrons occurs at anode and reduction gain of electrons occurs at cathode?

1. Electrolytic
2. Electrochemical
3. Secondary
4. Primary

B

Q.19: Any device that converts chemical energy into electrical energy or electrical energy into chemical energy is called:?

1. Pencil cell
2. Electrolytic cell
3. Electrochemical cell
4. Photo cell

C