| 1. | Electricity is measured through a device called as |
| a. | Ammeters |
| b. | Voltmeters |
| c. | Barometers |
| d. | Anemometers |
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Answer: (a).Ammeters
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| 2. | Any reaction at an anode involves |
| a. | gain of electrons |
| b. | loss of electrons |
| c. | gain or loss depends upon the electrolyte |
| d. | formation of gases |
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Answer: (b).loss of electrons
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| 3. | Aluminum (Al) is preferred in overhead power cables because |
| a. | it is a good conductor |
| b. | it acts as an insulator, in case of lightening |
| c. | it prevents accidents |
| d. | it is lighter in weight |
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Answer: (d).it is lighter in weight
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| 4. | Reactivity series of metals is also called as the |
| a. | preferential series |
| b. | electrochemical series |
| c. | electrolytic series |
| d. | selective discharge series |
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Answer: (b).electrochemical series
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| 5. | If molten Lead Bromide (PbBr₂) is electrolyzed, |
| a. | at anode, brown fumes of bromide gas are given off |
| b. | at anode, molten lead can be seen |
| c. | at cathode, brown fumes can be seen |
| d. | at cathode, lead bromide can be seen |
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Answer: (a).at anode, brown fumes of bromide gas are given off
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