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Test: Standard Electrode Potential - NEET MCQ


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10 Questions MCQ Test Chemistry Class 12 - Test: Standard Electrode Potential

Test: Standard Electrode Potential for NEET 2024 is part of Chemistry Class 12 preparation. The Test: Standard Electrode Potential questions and answers have been prepared according to the NEET exam syllabus.The Test: Standard Electrode Potential MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Standard Electrode Potential below.
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Test: Standard Electrode Potential - Question 1

Chemical used in salt bridge is:

Detailed Solution for Test: Standard Electrode Potential - Question 1

KCl is used as salt bridge because it provides positive K+ ions and negative Cl- ions as the salt bridge needs to maintain the neutrality in the system by providing enough negative ions equal to the positive ions during oxidation.

Test: Standard Electrode Potential - Question 2

Hydrogen gas is not liberated when the following metal is added to dil. HCl.

Detailed Solution for Test: Standard Electrode Potential - Question 2

The metals, present below hydrogen in the electrochemical series, cannot liberate hydrogen from the dilute acids.
Among the given metals only Ag is present below hydrogen in electrochemical series, so it does not evolve hydrogen with dil HCl.
Ag−IdilHCl ⟶ No reaction

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Test: Standard Electrode Potential - Question 3

Temperature for the measurement of standard electrode potential is:

Detailed Solution for Test: Standard Electrode Potential - Question 3

The standard electrode potentials are customarily determined at solute concentrations of 1 Molar, gas pressures of 1 atmosphere, and a standard temperature which is usually 25°C i.e, 298 K.

Test: Standard Electrode Potential - Question 4

The electrode potential measures the ______.

Detailed Solution for Test: Standard Electrode Potential - Question 4
  • The tendency of an electrode to lose or gain electrons when it is in contact with its own ions in solution is called electrode potential. 
  • Since the tendency to lose electrons means also the tendency to get oxidised, this tendency is called oxidation potential.
  • Similarly, the tendency to gain electrons means the tendency to get reduced.
  • Hence this tendency is called reduction potential. 
Test: Standard Electrode Potential - Question 5

The reduction potential of an element A is 1.71 V. What can be concluded from this?

Detailed Solution for Test: Standard Electrode Potential - Question 5
  • The standard reduction potential is the tendency for a chemical species to be reduced, and is measured in volts at standard conditions.
  • The more positive the potential is the more likely it will be reduced. Hence, A will undergo reduction easily.
Test: Standard Electrode Potential - Question 6

Stronger the oxidizing agent, greater is the :

Detailed Solution for Test: Standard Electrode Potential - Question 6

Stronger oxidizing agent means more easily it undergoes reduction and thus have greater standard reduction potential.
Remember, Li is the strongest reducing agent and F is the strongest oxidizing agent

Test: Standard Electrode Potential - Question 7

Consider the following reaction which of the following statement is true for this cell reaction.
(Zn + Cu2+ → Zn2+ + Cu)

Detailed Solution for Test: Standard Electrode Potential - Question 7
  • For the reaction Zn + Cu2+ → Zn2+ + Cu, Zn is oxidized to Zn2+ while Cu2+ is reduced to Cu
  • In a redox reaction, the reactant that loses electrons (is oxidized) causes a reduction and is called a reducing agent. In the example above, zinc metal is the reducing agent; it loses two electrons (is oxidized) and becomes Zn2+ ion.
Test: Standard Electrode Potential - Question 8

A half cell reaction A- → A + e- has a large negative reduction potential. It follows that :

Detailed Solution for Test: Standard Electrode Potential - Question 8

The more negative the potential is the more likely the element will be oxidized. Hence, A− is readily oxidized.

Test: Standard Electrode Potential - Question 9

Two elements A and B have reduction potential’s 0.23V and 0.46V which statement is true regarding these two elements.

Detailed Solution for Test: Standard Electrode Potential - Question 9

The more positive the reduction potential value, the more is the tendency of the element to reduce itself and hence more will be the tendency to accept electrons.

Hence the other element will have more tendency to lose electrons 

Test: Standard Electrode Potential - Question 10

The reduction potential of an element A is -2.71V. What can be concluded from this?

Detailed Solution for Test: Standard Electrode Potential - Question 10

Reduction potential means to accept electrons to reduce oneself.
 A + e- → A- ∆Ereduction = +ve value
Since, the reduction potential is negative, it means that the reaction will reverse to make ∆E value +ve. So the reaction becomes,
A → A+ + e- 
This becomes oxidation of A. So oxidation of A will be easy. 

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