| 1 |
Which one of the following is not an electrolyte?<br> |
- A. sugar solution<br>
- B. sulphuric acid solution<br>
- C. Lime solution<br>
- D. Sodium chloride solution<br>
|
| 2 |
Copper extracted from its ore is ____________ % pure. |
- A. 98%
- B. 99%
- C. 96%
- D. Nil
|
| 3 |
Br2 + H2S __ 2HBr + S, which one is oxidizing agent: |
- A. H2S
- B. Br2
- C. S
- D. 2HBr
|
| 4 |
It is a strong electrolyte |
- A. H2O
- B. CH3COOH
- C. NaOH
- D. C6H6
|
| 5 |
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
|
| 6 |
Addition of OXYGEN is called. |
- A. Reduction
- B. Conduction
- C. Oxidation
- D. Nil
|
| 7 |
____________ is prevented by Metallic coating. |
- A. NaCl
- B. Rust
- C. All
- D. None of these
|
| 8 |
Cu + 2AgNO3 -------> Cu(NO3) +2Ag. In this reaction reducing agent is: |
- A. Cu
- B. AgNO3
- C. Cu(NO3)2
- D. Ag
|
| 9 |
Brine is an aqueous solution of |
- A. NaCI
- B. NaOH
- C. AgNO3
- D. CaO
|
| 10 |
In metal hydrides, the oxidation number of hydrogen is |
|
