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The EMF of a cell is...

The EMF of a cell is

A

sum of two oxidation potentials

B

sum of two potentials

C

difference of two electrode potentials

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
C
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What is the EMF of a cell?

A : parctically a voltmeter will measure the voltage across the battery but not its EMF. R : EMF of a cell is measured with the help of a potentiometer .

Knowledge Check

  • The EMF of the cell cannot be measured accurately by a voltmeter because

    A
    voltmeter is very sensitive
    B
    concentration changes during measurement
    C
    the voltmeter damages the cell
    D
    the voltmeter changes the cell reaction

  • The best instrument for accurate measure ment of EMF of a cell is:

    A
    Potentiometer
    B
    Metre bridge
    C
    Voltmeter
    D
    Ammeter and voltmeter

  • Assertion (A: Cell constant is the EMF of a cell. Reason (R): Cell constant is determined by using saturated KCl solution.

    A
    If both `(A)` and `(R)` are correct, and `(R)` is the correct explanation of `(A)`.
    B
    If both `(A)` and `(R)` are correct, but `(R)` is not the correct explanation of `(A)`.
    C
    If `(A)` is correct, but `(R)` is incorrect.
    D
    If `(A)` is incorrect, `(R)` is correct.

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    nernst equation gives the effect of _____and____on the EMF of a cell.

    In a Danlel cell, the EMF of the cell can be Increased by

    Daniel cell, the EMF of the cell can b e increased b y

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