| 1 |
____________ are good conductors of electricity. |
- A. Covalent compound
- B. Metals
- C. Both
- D. None of these
|
| 2 |
Gain of electrons in a reaction is called ____________reaction. |
- A. Oxidation
- B. Reduction
- C. Both
- D. Nil
|
| 3 |
Formation of water form hydrogen and oxygen is:<br> |
- A. Redox reaction<br>
- B. Acid-base reaction <br>
- C. Neutralization<br>
- D. Decomposition<br>
|
| 4 |
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>
|
| 5 |
Reduction means |
- A. Removal of H2
- B. Removal of electrons
- C. Gain of electrons
- D. Gain of O2
|
| 6 |
The cathode of Daniel cell is made up of |
|
| 7 |
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
|
| 8 |
Films are coated by special chemical known as ____________ detectors. |
- A. Photographic
- B. Image
- C. Nil
- D. Both
|
| 9 |
In peroxides, the oxidation no. of O is |
|
| 10 |
It is a good reducing agent |
|
