| 1 |
The cathodic reaction in the electrolysis of dil H2SO4, with pt electrode sis. |
- A. Reduction
- B. Oxidation
- C. Both oxidation and reduction
- D. Neither oxidation nor reduction
|
| 2 |
When aqueous NaCl is electrolyzed, which of the following ions gas discharged at anode. |
- A. Cl-
- B. OH-
- C. Na+
- D. H+
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| 3 |
Electrode of the lead storage battery are immersed in dilute H2SO4 which has strength by mass |
- A. 100%
- B. 98%
- C. 30%
- D. 10%
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| 4 |
The cell in which a non spontaneous redox reaction takes place as a result of electricity is known as. |
- A. Voltaic cell
- B. Denial cell
- C. dry Cell
- D. Electrolytic cell
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| 5 |
According to classical concept, oxidation involves |
- A. Addition of oxygen
- B. Addition of electron
- C. Removal of hydrogen
- D. All are correct
|
| 6 |
In H2SO4the oxidation number of 'S' is |
|
| 7 |
Oxidation number of Cr in a C<sub>2</sub>CrO<sub>4</sub> is |
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| 8 |
In silver oxide battery, the cathode is mad up of. |
- A. AgO
- B. Ag2O
- C. Ag2O3
- D. Ag
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| 9 |
The oxidation number of C in C12H22O11 is |
- A. Zero
- B. - 6
- C. + 6
- D. 12
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| 10 |
What is oxidation state of chlorine in Ca(ClO3)2 |
|