Electrolysis and storage of batteries Archives

71. Following will happen if battery charging rate is too high

excessive gassing will occur

temperature rise will occur

bulging and buckling of plates will occur

all above will occur

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72. If a lead-acid cell is discharged below 1.8 V the following will happen.

Capacity of cell will reduce

Sulphation of plates will occur

Internal resistance will increase

All above will occur

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73. Which of the following cell has a reversible chemical reaction ?

Lead-acid

Mercury oxide

Carbon-zinc

Silver-oxide

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74. Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.

passive

active

redundant

inert

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75. Following will occur if level of electrolyte falls below plates

capacity of the cell is reduced

life of the cell is reduced

open plates are converted to lead sulphate

all above

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76. It is noticed that durum charging

There is a rise in voltage

Energy is absorbed by the cell

Specific gravity of H2SO4 is increased

The anode becomes chocolate brown in colour (PbCfe) and cathode becomes grey metallic lead (Pb) E. All of the above

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77. During the idle period of the battery, strong electrolyte tends to change the active material of the cell into

PbO2

PbSC4

PbO

Detailed SolutionDuring the idle

period of the battery, strong electrolyte tends to change the active material of the cell into

78. Which of the following factors adversely affects the capacity of the leadacid battery ?

Temperature of surroundings

Specific gravity of electrolyte

Rate of discharge

All of the above

Detailed SolutionWhich of the

following factors adversely affects the capacity of the leadacid battery ?

79. Five 2 V cells are connected in parallel. The output voltage is

1 V

1.5 V

1.75 V

2 V

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132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube is" class="read-more button" href="https://exam.pscnotes.com/mcq/five-2-v-cells-are-connected-in-parallel-the-output-voltage-is/#more-46617">Detailed Solution

80. The substances which combine together to store electrical energy during the charge are called ______ materials

active

passive

inert

dielectric

Detailed SolutionThe substances which

combine together to store electrical energy during the charge are called ______ materials

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