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1) As compare to iron, aluminum has a. higher tendency to oxidize b. less tendency to oxidize c. equal tendency to oxidize d. all of above
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2) Oxidation-reduction reaction involves a. transfer of neutrons b. transfer of protons c. transfer of electrons d. all of above
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3) Lead and Zinc metals occur naturally as a. oxides b. sulphite ores c. carbon ores d. chloride ores
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4) Conditions for good electroplating are a. high current density b. low temperature c. high concentration of metal in electrolyte d. all of above
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5) Electrochemical cells convert which of these into electrical energy? a. mechanical energy b. potential energy c. kinetic energy d. chemical energy
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6) The electrolyte among the following is a. NaOH b. urea c. glucose d. benzene
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7) The process used to deposit one metal over another metal is called a. electrolysis b. electroplating c. carbon plating d. none of above
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8) A physical or chemical process that occurs by itself is called a. non spontaneous b. self occurring process c. spontaneous process d. thermodynamic process
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9) Voltaic cells generate electricity by a. spontaneous redox reaction b. non spontaneous redox reaction c. sublimation reaction d. thermochemical reaction
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10) The oxidation state of any free element is always a. 1 b. 2 c. 3 d. 0
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