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7th Chapter

9th class Chemistry Chapter 7 (English Medium)

Here you can prepare 9th Chemistry English Medium Chapter 7 (Electrochemistry) Test. Click the button for 100% free full practice test.

Matric Part 1/9th Class Chemistry Chapter 7 MCQ Test With Answer for Chapter 7 Electrochemistry

Matric Part 1/9th Class Chemistry Chapter 7 MCQ Test With Answer for Chapter 7 Electrochemistry

Sr. # Questions Answers Choice
1 ____________ is prevented by Metallic coating.
  • A. NaCl
  • B. Rust
  • C. All
  • D. None of these
2 The cathode of Nelson's cell is made up of
  • A. C
  • B. Zn
  • C. Cu
  • D. Fe
3 The cathode of Daniel cell is made up of
  • A. Zn
  • B. Cu
  • C. AI
  • D. C
4 Nelson's cells used to prepare caustic soda along with gases. Which of the following gas is produced at cathode?<br>
  • A. CI<sub>2</sub>
  • B. H<sub>2</sub>
  • C. O<sub>3</sub>
  • D. O<sub>2</sub>
5 In metal hydrides, the oxidation number of hydrogen is
  • A. +1
  • B. -1
  • C. +2
  • D. -2
6 The metallic plates through which electrons enters and leaves electrolytes:
  • A. Wires
  • B. Electrodes
  • C. Both
  • D. Nil
7 The oxidation number of chromium in K<sub>2</sub>Cr<sub>2</sub>O<sub>7</sub> is:<br>
  • A. +2<br>
  • B. +6<br>
  • C. +7<br>
  • D. +14<br>
8 Br2 + H2S __ 2HBr + S, which one is oxidizing agent:
  • A. H2S
  • B. Br2
  • C. S
  • D. 2HBr
9 Oxidation means
  • A. Gain of oxygen
  • B. Removal of oxygen
  • C. Gain of hydrogen
  • D. Gain of electrons
10 ____________ of copper is done by electrolysis.
  • A. Production
  • B. Refining
  • C. Both
  • D. Nil

Top Scorers of 9th Class Chemistry Chapter 7 Electrochemistry English Medium KPK Boards Online Test

K

Khadija Ateeq

Lahore25 - Jan - 2024

12/12
42 Sec
K

Khadija Ateeq

Lahore26 - Jan - 2024

12/12
42 Sec
B

Bilal Tariq

Lahore29 - Mar - 2024

12/12
42 Sec
K

Khadija Ateeq

Lahore25 - Jan - 2024

12/12
51 Sec
Y

Yuktan Javed

Lahore21 - Feb - 2024

12/12
51 Sec
B

Bilal Tariq

Lahore29 - Mar - 2024

12/12
52 Sec
B

Bilal Tariq

Lahore29 - Mar - 2024

12/12
52 Sec
B

Bilal Tariq

Lahore29 - Mar - 2024

12/12
53 Sec
B

Bilal Tariq

Lahore29 - Mar - 2024

12/12
55 Sec
N

Nida

Lahore25 - Jan - 2024

12/12
55 Sec
B

Bilal Tariq

Lahore29 - Mar - 2024

12/12
57 Sec
B

Bilal Tariq

Lahore29 - Mar - 2024

12/12
59 Sec
B

Bilal Tariq

Lahore29 - Mar - 2024

12/12
01 Mins 02 Sec
Y

Yuktan Javed

Lahore21 - Feb - 2024

12/12
01 Mins 08 Sec
L

Laiba Tabasum

Lahore16 - Feb - 2024

12/12
01 Mins 09 Sec

Chapterwise Lists

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