Electrochemistry

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Electrochemistry - 01

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Q1. What flows in the internal circuit of a galvanic cell? *

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Electrons

Ions

Electricity

Atoms

Q2. Which of the following statements about galvanic cell is incorrect *

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cathode is positive

anode is positive

reduction occurs at cathode

oxidation occurs at the electrode with lower reduction potential

Q3. In which of the following conditions salt bridge is not required in a galvanic cell? *

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When galvanic cell is used in geyser.

When both the electrodes are dipped in the same electrolytic solution.

When distance between oxidation half cell and reduction half cell is negligible.

Electrolytic solutions used in both the half cells are of same concentration.

Q4. Which device converts chemical energy of a spontaneous redox reaction into electrical energy? *

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Galvanic cell

Electrolytic cell

Both Galvanic and Daniel Cell

Daniell cell

Q5. Which one is not called a anode reaction from the following? *

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Q6. The cell reaction Cu + 2Ag+ → Cu+2 + Ag is best represented by *

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Q7. *

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Weston cell

Calomel cell

Faraday cell

Daniel cell

Q8. The tendency of an electrode to lose electrons is known as *

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e.m.f

reduction potential

electrode potential

oxidation potential

Q9. *

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Q10. Given that the standard reduction potentials for M+/M and N+/N electrodes at 298 K are 0.52 V and 0.25 V respectively. Which of the following is correct in respect of the following electrochemical cell ? *

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The standard EMF of the cell is 0.77 V.

The standard EMF of the cell is – 0.77 V

The standard EMF of the cell is – 0.27 V.

The overall cell reaction is a spontaneous reaction.

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