| 1 |
CO2 the oxidation number of C =. |
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| 2 |
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
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| 3 |
It is a good reducing agent |
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| 4 |
Br2 + H2S __ 2HBr + S, which one is oxidizing agent: |
- A. H2S
- B. Br2
- C. S
- D. 2HBr
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| 5 |
Gain of electrons in a reaction is called ____________reaction. |
- A. Oxidation
- B. Reduction
- C. Both
- D. Nil
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| 6 |
Formation of water form hydrogen and oxygen is:<br> |
- A. Redox reaction<br>
- B. Acid-base reaction <br>
- C. Neutralization<br>
- D. Decomposition<br>
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| 7 |
____________ is an irreversible cell. |
- A. Dry cell
- B. Chargeable cell
- C. Zn cell
- D. None of these
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| 8 |
Spontaneous chemical reactions take place in:<br> |
- A. electrolytic cell <br>
- B. Galvanic cell <br>
- C. Nelson' s cell <br>
- D. downs cell <br>
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| 9 |
Oxidation means |
- A. Gain of oxygen
- B. Removal of oxygen
- C. Gain of hydrogen
- D. Gain of electrons
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| 10 |
Which one of the following is a galvanic cell? |
- A. Daniel cell
- B. Nelson's cell
- C. Down's cell
- D. Both B and C
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