Electrolysis and storage of batteries

61. As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its

compactness
lower e.m.f.
small quantity of electrolyte used
higher internal resistance

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nickel-iron cell is less due to its" class="read-more button" href="https://exam.pscnotes.com/mcq/as-compared-to-a-lead-acid-cell-the-efficiency-of-a-nickel-iron-cell-is-less-due-to-its/#more-49745">Detailed SolutionAs compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its

62. During the charging of a lead-acid cell

Its voltage increases
It gives out energy
Its cathode becomes dark chocolate brown in colour
Specific gravity of H2SO4 decreases

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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
title="During the charging of a lead-acid cell" class="read-more button" href="https://exam.pscnotes.com/mcq/during-the-charging-of-a-lead-acid-cell/#more-49499">Detailed SolutionDuring the charging of a lead-acid cell

63. Chargmg of sulphated battery produces ____ heat.

no
very little
less
more

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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 href="https://exam.pscnotes.com/mcq/chargmg-of-sulphated-battery-produces-____-heat/#more-49215">Detailed SolutionChargmg of sulphated battery produces ____ heat.

64. The active materials of a nickel-iron battery are

nickel hydroxide
powdered iron and its oxide
21% solution of kOH
all of the above

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nickel-iron battery are" class="read-more button" href="https://exam.pscnotes.com/mcq/the-active-materials-of-a-nickel-iron-battery-are/#more-49151">Detailed SolutionThe active materials of a nickel-iron battery are

65. Internal resistance of a cell is due to

resistance of electrolyte
electrode resistance
surface contact resistance between electrode and electrolyte
all above

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href="https://exam.pscnotes.com/mcq/internal-resistance-of-a-cell-is-due-to/#more-49124">Detailed SolutionInternal resistance of a cell is due to

66. Which of the following primary cells has the highest voltage ?

Manganese-alkaline
Carbon-zinc
Lithium
Mercury

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target="_blank" class="youtube-subscribe-button"> Subscribe on YouTube href="https://exam.pscnotes.com/mcq/which-of-the-following-primary-cells-has-the-highest-voltage/#more-49018">Detailed SolutionWhich of the following primary cells has the highest voltage ?

67. Electrolyte used in an Edison cell is

NaOH
KOH
HCl
HNO3

Detailed SolutionElectrolyte used

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in an Edison cell is

68. Short circuiting of a cell may be caused

buckling of plates
faulty separators
lead particles forming circuit between positive and negative plates

Detailed SolutionShort circuiting of a cell may be caused

69. During the charging and discharging of a nickel-iron cell

corrosive fumes are produced
water is neither formed nor absorbed
nickel hydroxide remains unsplit
its e.m.f. remains constant

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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 button" href="https://exam.pscnotes.com/mcq/during-the-charging-and-discharging-of-a-nickel-iron-cell/#more-48484">Detailed SolutionDuring the charging and discharging of a nickel-iron cell

70. The open circuit voltage of any storage cell depends wholly upon

its chemical constituents
on the strength of its electrolyte
its temperature
all above

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href="https://exam.pscnotes.com/mcq/the-open-circuit-voltage-of-any-storage-cell-depends-wholly-upon/#more-48318">Detailed SolutionThe open circuit voltage of any storage cell depends wholly upon

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