| 1 |
The metallic plates through which electrons enters and leaves electrolytes: |
- A. Wires
- B. Electrodes
- C. Both
- D. Nil
|
| 2 |
NaOH is prepared by ____________ of NaCL (aqueous). |
- A. Electrolysis
- B. Decomposition
- C. A & B
- D. Nil
|
| 3 |
During the formation of water from hydrogen and oxygen, which of the following does not occur?<br> |
- A. Hydrogen has oxidized<br>
- B. oxygen has reduced<br>
- C. oxygen gains electrons<br>
- D. hydrogen behaves as oxidizing agent<br>
|
| 4 |
It is a strong electrolyte |
- A. H2O
- B. CH3COOH
- C. NaOH
- D. C6H6
|
| 5 |
Which is used for industrial manufacture of NaCI? |
- A. Daniel cell
- B. Down's cell
- C. Nelson's cell
- D. None of these
|
| 6 |
Reduction means |
- A. Removal of H2
- B. Removal of electrons
- C. Gain of electrons
- D. Gain of O2
|
| 7 |
Spontaneous chemical reactions take place in:<br> |
- A. electrolytic cell <br>
- B. Galvanic cell <br>
- C. Nelson' s cell <br>
- D. downs cell <br>
|
| 8 |
Copper extracted from its ore is ____________ % pure. |
- A. 98%
- B. 99%
- C. 96%
- D. Nil
|
| 9 |
Brine is an aqueous solution of |
- A. NaCI
- B. NaOH
- C. AgNO3
- D. CaO
|
| 10 |
Addition of OXYGEN is called. |
- A. Reduction
- B. Conduction
- C. Oxidation
- D. Nil
|
