Name the following:
An alloy of lead and tin that is used in electrical circuits.
Solder is used in electrical circuits.
Complete the following by selecting the correct option from the choices given:
The metal whose oxide, which is amphoteric, is reduced to metal by carbon
reduction ____________. (Fe/Mg/Pb/Al)
Complete the following by selecting the correct option from the choices given:
The metal which does not react with water or dilute H2SO4 but reacts with
concentrated H2SO4 is _________. (Al/Cu/Zn/Fe)
Answer the following questions with respect to the electrolytic process in the extraction of aluminium:
Explain why powdered coke is sprinkled over the electrolytic mixture.
Answer the following questions with respect to the electrolytic process in the extraction of aluminium:
Identify the components of the electrolyte other than pure alumina and the role played by each.
The divalent metal whose oxide is reduced to metal by electrolysis of its fused salt is __________. (Al/Na/Mg/K)