Question

29. Other things being equal, the life of a Daniell cell
may be increased by
(1) Keeping low temperature
(2) Using large copper electrode
(3) Decreasing concentration of copper ions
(4) Using large zinc electrodes
​

Answer 1

Answer:

3. Decreasing concentration of copper ions

Answer 2

Ans: optn_1

the decrease in temperature

another way the "increasing "concentration of copper ion may also increase the life of danielcell