Chemistry
Fill in the blanks :
(a) During the concentration of bauxite ore, aluminium goes in …………… (soluble/insoluble) part because of its …………… (acidic/basic/amphoteric) nature.
(b) In Hoope's process, pure aluminium is collected at the …………… (top/bottom) of the electrolytic cell.
Related Questions
(a) Aluminium is a more active metal than iron but suffers less corrosion. Why?
(b) Explain and give reasons why aluminium vessels should not be cleaned with powders containing alkalis.
Given below in column A is a schematic diagram of the electrolytic reduction of alumina. Identify the parts labelled as A, B and C with the correct options from the Column B.
Explain the following:
(a) Zinc is used to cover iron so as to prevent rusting of iron. Why?
(b) In construction work, why is the alloy of aluminium–duralumin used rather than pure aluminium?
What is an alloy? How do the properties of an alloy differ from it's constituents?