Question

Following are some of the facts about dry cell

i) It is also called Leclanche cell

ii) It is also called Daniel cell

iii) Electrolyte is a moist paste of NH${}_4$Cl and ZnCl${}_2$in starch

iv) Cathodic reaction is

MnO${}_2$ (s) + NH${}_4^{+}$ + e${}^{-}\to$MnO(OH)+NH${}_3$

Select correct facts :

• A. i, ii, iii
• B. i, iii, iv
• C. ii, iii, iv
• D. i, iv

Answer 1

The correct option is B i, iii, iv

Daniel cell consists of zinc and copper metals dipping solutions containing zinc sulphate and copper sulphate. In dry cell, the anode is zinc whereas cathode is graphite.

Hence, option B is correct.