| 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 formula of rust is:<br> |
- A. Fe<sub>2</sub>O<sub>3</sub>,nH<sub>2</sub>o
- B. Fe<sub>2</sub>O<sub>3</sub>
- C. Fe(OH)<sub>3</sub>-nH<sub>2</sub>O<br>
- D. Fe(OH)<sub>3</sub>
|
| 3 |
____________ cell is made of two half of cells. |
- A. Zinc cell
- B. Galvanic
- C. Both
- D. All
|
| 4 |
The cathode of Nelson's cell is made up of |
|
| 5 |
____________ do not conduct electricity. |
- A. Electrolyte
- B. Non-electrolyte
- C. Both
- D. Nil
|
| 6 |
____________ agents gains electrons in chemical reaction. |
- A. Reduction
- B. Oxidation
- C. Both
- D. None of these
|
| 7 |
Copper extracted from its ore is ____________ % pure. |
- A. 98%
- B. 99%
- C. 96%
- D. Nil
|
| 8 |
The branch of chemistry which deals with inter conversion of electrical & chemical energy is: |
- A. Biochemistry
- B. Electrochemistry
- C. Organic chemistry
- D. None of these
|
| 9 |
____________ are good conductors of electricity. |
- A. Covalent compound
- B. Metals
- C. Both
- D. None of these
|
| 10 |
In silver plating Anode is made of: |
- A. Gold
- B. Ag
- C. Neon
- D. Nil
|
