Redox Reactions And Electrochemistry Ques 729

Question: Match List I with List II and select the correct answer using the code given below the lists:
List-I List-II
$ ZnZ{n^{2+}}(0.01M), $ $ Z{n^{2+}}(0.1M)Zn $ (p) primary cell
1 Coulomb (q) Secondary cell
Dry Cell (r) $ 6.24\times 10^{18} $ electrons
Lead storage cell (s) Concentration cell

Options:

A) A-s, B-r, C-p, D-q

B) A-p, B-q, C-r, D-s

C) A-q, B-r, C-s, D-p

D) A-s, B-p, C-q, D-r

Show Answer

Answer:

Correct Answer: A

Solution:

[a] is concentration cell.

[b] $ 1{e^{-}}=1.6\times {10^{-19}} $ colulomb

1 coulomb $ =\frac{10^{19}}{1.6}=6.24\times 10^{18} $

[c] Dry cell is a primary cell.

[d] Lead storage cell is secondary cell.



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