Advertisements
Advertisements
Question
Higher Order Thinking Skill.
Batteries that are used in mobile phone can be recharged. Likewise, can you recharge the batteries used in watches? Justify your answer
Solution
A primary cell cannot be recharged. Watch batteries have a primary cell. In a primary cell, chemical energy is converted into electrical energy when current is drawn from it.
Whereas mobile phones use secondary cells. In secondary cells electrical energy is converted to chemical energy when current is passed through it and chemical energy is converted to electrical energy when current is drawn from it.
APPEARS IN
RELATED QUESTIONS
______ is an electrochemical cell which converts electrical energy into chemical change(Reaction).
Explain the structure of an electrolytic cell.
In Daniel's cell, a saturated solution of potassium chloride (KCl) acts as ______.
The process of purifying metals by electrolysis ¡s known as ______.
In Daniel’s cell, Zinc metal acts as the cathode, and Copper metal acts as Anode.
Write brief notes on processes involved in cell reactions.
How does a galvanic cell produce electricity?
Mention the applications of electroplating with an example.
Draw the cell diagram of Daniel's cell. Give its reactions.
Match the following:
| Column I | Column II | |
| 1. | Cathodic electrolyte | Potassium chlorate (KClO3) |
| 2. | Anodic electrolyte | Potassium chloride (KCl) |
| 3. | Salt bridge | sulphate CuSO4 |
| 4. | Electro manufacturing | Zinc sulphate(ZnSO4) |
