Electrolysis and Storage of Batteries

81. The body of Edison cell is made of

1. bakelite
2. rubber
3. nickel plated steel
4. aluminium

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82. The capacity of a battery is expressed in terms of

1. current rating
2. voltage rating
3. ampere-hour rating
4. none of the above

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83. The capacity of a lead-acid cell depends on

1. rate of discharge
2. temperature
3. density of electrolyte
4. quantity of active materials (e) all above
5. all above

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84. The capacity of a lead-acid cell does not depend on its

1. temperature
2. rate of charge
3. rate of discharge
4. quantity of active material

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85. The capacity of a lead-acid cell is measured in

1. amperes
2. ampere-hours
3. watts
4. watt-hours

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86. The charge required to liberate one gram equivalent of any substance is known as _________ constant

1. time
2. Faraday's
3. Boltzman
4. none of the above

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87. The common impurity in the electrolyte of lead-acid battery is

1. chlorine
2. dust particles
3. lead crystals
4. iron

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88. The current flow through electrolyte is due to the movement of

1. ions
2. holes
3. electrons
4. none of the above

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89. The e.m.f. of an Edison cell, when fully charged, is nearly

1. 1.4 V
2. 1 V
3. 0.9 V
4. 0.8 V

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90. The effect of sulphation is that the internal resistance

1. increases
2. decreases
3. remains same
4. none of the above

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