| 1 |
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>
|
| 2 |
The metallic plates through which electrons enters and leaves electrolytes: |
- A. Wires
- B. Electrodes
- C. Both
- D. Nil
|
| 3 |
Which one of the following is not an electrolyte?<br> |
- A. sugar solution<br>
- B. sulphuric acid solution<br>
- C. Lime solution<br>
- D. Sodium chloride solution<br>
|
| 4 |
By electrolytic refining of copper , it is ____________ % pure. |
- A. 98
- B. 99
- C. 99.99
- D. 100
|
| 5 |
In the redox reaction between zn and HCI. the oxidizing agent is:<br> |
- A. zn <br>
- B. H<sup>+</sup>
- C. C
- D. H<sup>2</sup>
|
| 6 |
____________ agents gains electrons in chemical reaction. |
- A. Reduction
- B. Oxidation
- C. Both
- D. None of these
|
| 7 |
It is a good reducing agent |
|
| 8 |
____________ do not conduct electricity. |
- A. Electrolyte
- B. Non-electrolyte
- C. Both
- D. Nil
|
| 9 |
____________ of copper is done by electrolysis. |
- A. Production
- B. Refining
- C. Both
- D. Nil
|
| 10 |
____________ cell is made of two half of cells. |
- A. Zinc cell
- B. Galvanic
- C. Both
- D. All
|
