| 1. | Electrolyte for silver plating is ? | |
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potassium nitrate solution
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dilute sulphuric acid
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double cyanide of silver and potassium solution
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any of the above
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Report Question| 2. | Batteries are charged by ? | |
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rectifiers
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engine generator sets
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motor generator sets
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any one of the above methods
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| 3. | The output voltage of a silver oxide cell ? | |
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1.2 V
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1.3 V
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1.5 V
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1.9 V
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| 4. | In a lead-acid battery, separators are provided to ? | |
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reduce internal resistance
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facilitate flow of current
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reduce tendency for polarisation
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avoid internal short circuits
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| 5. | ...... of electrolyte Indicates the state of charge of the battery ? | |
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colour
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mass
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viscosity
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specific gravity
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| 6. | For cadmium plating electrolyte used is ? | |
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cadmium sulphate and sulphuric acid
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cadmium hexa metaphosphate
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sodium cyanide, cadmium and caustic soda
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any of the above
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| 7. | Hydrogen evolved during charging produces explosive mixture when it is more than ? | |
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2%
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4%
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6%
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8%
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| 8. | The electrode for a battery must be ? | |
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a semi-conductor
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an insulator
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a good conductor of electricity
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a bad conductor of electricity
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| 9. | When two batteries are connected in parallel, ·it should be ensured that ? | |
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they have same e.m.f.
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they have same make
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they have same ampere-hour capacity
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they bave identical internal resistance
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| 10. | One ampere-hour charge is equivalent to ? | |
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200 coulombs
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360 coulombs
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3600 coulombs
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6000 coulombs
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