JKCET SERIES
Chemistry

Electrochemistry

15 previous year questions.

Volume: 15 Ques
Yield: Medium

High-Yield Trend

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2024
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2007

Chapter Questions
15 MCQs

01
PYQ 2007
medium
chemistry ID: jkcet-20
The specific conductance of an electrolyte of concentration is related to equivalent by the following formula
1
2
3
4
02
PYQ 2008
medium
chemistry ID: jkcet-20
Galvanic cell is a device in which
1
chemical energy is converted into electrical energy
2
electrical energy is converted into chemical energy
3
chemical energy is seen in the form of heat
4
thermal energy from an outside source is used to drive the cell reaction
03
PYQ 2010
medium
chemistry ID: jkcet-20
Faraday's constant is defined as
1
charge carried by one electron
2
charge carried by one mole of electron
3
charge required depositing one mole of substance
4
charge carried by two moles of electron
04
PYQ 2012
medium
chemistry ID: jkcet-20
Standard electrode potential of half-cell reactions are given below What is the emf of the cell?
1
+ 1.10 V
2
-1.10 V
3
-0.42 V
4
+0.42 V
05
PYQ 2012
hard
chemistry ID: jkcet-20
During spontaneous discharge of an electrochemical cell Gibb's free energy will
1
increase
2
decrease
3
not change
4
be infinity
06
PYQ 2012
medium
chemistry ID: jkcet-20
Anode reaction of a fuel cell is
1
2
3
4
07
PYQ 2013
medium
chemistry ID: jkcet-20
When a solution of sodium hydroxide is added to acetic acid solution, the conductivity of the resulting solution will
1
increase
2
remain unchanged
3
decrease
4
become zero
08
PYQ 2014
medium
chemistry ID: jkcet-20
All substances that conduct electricity in aqueous solutions are called?
1
Electrolytes
2
Acids
3
Buffers
4
Catalyst
09
PYQ 2015
medium
chemistry ID: jkcet-20
is a weak acid. At , the molar conductivity of is . If its is , then equilibrium constant of dissociation is
1
0.001
2
0.005
3
0.01
4
0.02
10
PYQ 2016
easy
chemistry ID: jkcet-20
The of a galvanic cell by coupling two electrodes is . If the value (reduction potential) of electrode is (reduction potential) value of electrode in volts would be
11
PYQ 2017
medium
chemistry ID: jkcet-20
According to the expression , the cell reaction is spontaneous when (Notations and symbols carry their usual meanings)
1
is positive
2
is zero
3
is negative
4
is positive
12
PYQ 2018
medium
chemistry ID: jkcet-20
What will be the for the given cell ? Given : and . Also predict whether the reaction is spontaneous or non-spontaneous.
1
and spontaneous
2
and non-spontaneous
3
and non-spontaneous
4
and spontaneous
13
PYQ 2018
medium
chemistry ID: jkcet-20
What will be the half-cell potential of a hydrogen electrode acting as an anode and dipped in a solution of ?
1
2
3
4
None
14
PYQ 2024
medium
chemistry ID: jkcet-20
What is the EMF of a galvanic cell if and
1
1.56 volts
2
0.04 volts
3
-1.56 volts
4
-0.04 volts
15
PYQ 2024
medium
chemistry ID: jkcet-20
The standard oxidation potential of Ni/Ni electrode is 0.3 V. If this is combined with a hydrogen electrode in acid solution, at what pH of the solution will the measured e.m.f. be zero at 25°C? (Assume )
1
5.08
2
4
3
4.5
4
5.25