Rods through which electric current enters or leaves the cell:
(A) Protons
(B) electrons
(C) electrodes
(D) all of these
Electrode through which electrons enter the external circuit:
(A) Anode
(B) Cathode
(C) electrode
(D) none of these
Electrode through which electrons leave the external circuit:
(A) Anode
(B) Cathode
(C) graphite
(D) electrolyte
In the redox reaction between Zn and HCl, the oxidizing agent is:
(A) Zn
(B) H+
(C) Cl–
(D) H
Formation of water from hydrogen and oxygen is:
(A) Redox reaction
(B) Acid-base reaction
(C) Neutralization
(D) Decomposition
Symbol of hydronium ion is:
(A) H+
(B) OH-
(C) H3O+
(D) none of these
During electrolysis _____ takes place at anode.
(A) Catenation
(B) oxidation
(C) reduction
(D) addition
Spontaneous chemical reactions take place in:
(A) Electrolytic cell
(B) Galvanic cell
(C) Nelson's cell
(D) Down’s cell
Which is not the characteristic of electrolyte?
(A) Cheap
(B) conductor
(C) easily oxidized
(D) soluble in water
Which one of the following is not an electrolytic cell?
(A) Downs cell
(B) Galvanic cell
(C) Nelson's cell
(D) Both a and c
