| 1 |
The reduction potential of Zn is. |
- A. +0.76 V
- B. -0.34 B
- C. +0.34 V
- D. -0.76 V
|
| 2 |
That cell in which electrical energy is converted into chemical energy is called |
- A. Galvanic cell
- B. Electrolytic cell
- C. Fuel cell
- D. Daniel cell
|
| 3 |
Electrolysis is used for |
- A. Electroplating
- B. Refining of copper
- C. Manufacture of caustic soda
- D. All of the above
|
| 4 |
Standard hydrogen electrode has an arbitrarily fixed potential |
- A. 0.00 volts
- B. 1.00 volt
- C. 0.10 volt
- D. None of these
|
| 5 |
If a strips of Cu metal is placed in a solution of FeSO4 |
- A. Cu will be precipitated down
- B. Fe is precipitated out
- C. Cu and Fe both dissolve
- D. No reaction takes palce
|
| 6 |
When an atom reacts chemically and loses one or more electrons it is. |
- A. Decomposed
- B. Reduced
- C. Oxidized
- D. Catalyzed
|
| 7 |
|
- A. Fe is reduced
- B. Fe is oxidized
- C. CI<sub>2</sub>is oxidized
- D. None of these
|
| 8 |
If a strip of Cu metal is placed in a solution of FeSO<sub>4</sub> |
- A. Cu will be precipitated out
- B. Fe is precipitated out
- C. Cu and Fe both dissolve
- D. No reaction takes place
|
| 9 |
In silver oxide battery, anode is made of. |
- A. Zinc
- B. Copper
- C. Lead
- D. Graphite
|
| 10 |
If salt bridge is not used between two half cells, than the voltage. |
- A. Decreases rapidly
- B. Decreases slowly
- C. Does not change
- D. Drops of zero
|