Which of the following statement(s) is/are false for electrolytic cell?
Important Questions on Redox Reactions
Which of the following causes the rusting of iron?
I. Oxidation
II. Reduction
III. Chemical reaction with oxygen.
IV. Chemical reaction with .
Select the correct answer from the codes given below.
Match the terms of Column and Column and choose the correct option from the codes given below.
| Column | Column | ||
| A. | Leclanche cell | 1. | Cell reaction |
| B. | cell | 2. | Does not involve any ion in solution and is used in hearing aids. |
| C. | Fuel cell | 3. | Rechargeable |
| D. | Mercury cell | 4. | Reaction at anode |
| 5. | Converts energy of combustion into electrical energy |
Match List and List and select the correct answer by using the codes given below the lists.
| List (The atom for which the oxidation state is to the found) | List (Oxidation state) | ||
| A. | Oxygen in | 1. | |
| B. | Sulphur in | 2. | |
| C. | Carbon in | 3. | |
| D. | Manganese in | 4. | |
| 5. | + |
Statement : When hydrogen gas is passed over heated metallic oxide, it removes the oxygen from it.
Statement : Hydrogen is an oxidising agent.
Which of the following statements are true?
The valencies of the elements forming isomorphous compounds are the same.
Equivalent mass may vary with the change of valency.
Some elements show variable valency.
Select the correct answer using the codes given below.
