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1) A device in which electric current is produced at the expense of
spontaneous chemical reaction is:
a) voltaic cell
b) voltameter
c) galvanic cell
d) both a and c
ANSWER : both a and c
2) Which among the following is not true for electrochemical cell?
a) It consists of a battery.
b) It consists of generally two electrolytes.
c) Anode acquires negative charge.
d) It needs a porous partition.
ANSWER : It consists of a battery.
3) Among the following which is not a true statement for Faraday’s laws of
electrolysis?
a) The weight of substance deposited is directly proportional to the quantity of
electricity passed.
b) The weight of substance deposited at the respective electrodes are directly
proportional to their equivalent weights.
c) Both a and b
d) None of these.
ANSWER : None of these.
4) The quantity of electricity required to liberate or deposit 1 gram
equivalent of a substance from its solution during electrolysis is known as:
a) Faraday
b) Ampere
c) Coulomb
d) None of these
ANSWER : Faraday
5) If Eopp is slightly smaller than Ecell then:
a) no chemical reaction occurs.
b) spontaneous chemical reaction occurs.
c) an exactly reverse chemical reaction occurs.
d) non-spontaneous chemical reaction occurs.
ANSWER : spontaneous chemical reaction occurs.
6) Which among the following is not a usage of standard hydrogen electrode?
a) Used for pH measurement of a given solution.
b) Used in acid-base titrations.
c) Used as a primary reference electrode.
d) None of these.
ANSWER : None of these.
7) In calomel electrode the bottom of tube contains:
a) Hg
b) KCl solution
c) HCl solution
d) Both b and c
ANSWER : Hg
8) Salt bridge is an inverted U-glass tube containing saturated solution of:
a) KCl
b) NH4NO3
c) K2SO4
d) Any one of these
ANSWER : Any one of these
9) In a redox reaction if the emf is positive then the reaction is:
a) Non-spontaneous
b) Spontaneous
c) Both a and b
d) None of these.
ANSWER : Spontaneous
10) For the following reduction reaction how many coulombs are required? 1
mol of Cu2+ to Cu
a) 193000 C
b) 96500 C
c) 482500 C
d) 386000 C
ANSWER : 193000 C
Part 1
Part 2 Part 3
Part 4
Part 5
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