Question

Which of the following is incorrect regarding batteries?
1. Primary batteries cannot be recharged and reused again
2. Lead storage battery is an example of secondary battery
3. In a H2 - O2 fuel cell, water is electrolysed to give H2 and O2
4.In a Ni-Cd battery, the specific gravity of the alkaline electrolyte remains​

Answer 1

Answer:

Option 3 is incorrect.

Explanation:

Option 3 is incorrect because in H2-O2 the(all H₂ and ₂ Combined O2 to form H2o and energy. This energy is converted to electric d energy at a 2H2O.

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