| 1 |
In the reaction 2Fe+3Cl2 ------------ FeCl2 |
- A. Fe is reduced
- B. Fe is oxidized
- C. Cl2 is oxidized
- D. None of these happens
|
| 2 |
Fuel cells are mostly used in space air crafts as the source of. |
- A. Power only
- B. Drinking water
- C. Drinking water and power
- D. Fuel and drinking water
|
| 3 |
Electromotive force of the cell is the |
- A. Difference of two electrode potentials
- B. May be sum or the difference of two electrode potentials
- C. Sum of two electrode potential
- D. Depends upon the nature of the cell
|
| 4 |
The over all positive value for the reaction potential predicts that process is energetically. |
- A. Not feasible
- B. Feasible
- C. Impossible
- D. No indication
|
| 5 |
Electrolysis is a process in which a chemical reaction takes place at the expense of |
- A. Chemical energy
- B. Electrical energy
- C. Heat energy
- D. None of these
|
| 6 |
In which of the following changes, nitrogen in reduced. |
- A. NH3 to NO
- B. NH3 to NO3
- C. N2 to NH3
- D. N-3 to N2
|
| 7 |
A cell in which electric current is produced as a result of spontaneous redox reaction is called. |
- A. Electrolytic cell
- B. Galvanic cell
- C. Half cell reaction
- D. Down's cell
|
| 8 |
In NICAD dry cell, the cathode and anode is made up of. |
- A. Ca and Ag
- B. Ni and CdO2
- C. NiO2 and Cd
- D. Ag and Ag2O
|
| 9 |
Which statements not correct about Galvanic cell. |
- A. Anode in negatively charge
- B. Reduction occur at anode
- C. Cathode is positively charged
- D. Reduction occur at cathode
|
| 10 |
Oxidation number of Cr in a C<sub>2</sub>CrO<sub>4</sub> is |
|