(a)What is an amalgam ?
(b)Why is solder used for making electrical fuse?
(c)What is galvanisation ? State its significance.
(d)In the electrolytic refining of copper, name the anode and cathode
used and the electrolyte taken in the cell.
Answers
Answer:
a.amalgam.is a mixture of any metal with mercury
b.solder is an alloy of lead and tin, alloys become hot when current is passed as in fuse, overcurrent leads to heating and the solder wire breaks thus prevents damages.
c.Galvanization is the process of applying a protective zinc coating to steel or iron in order to prevent premature rust and corrosion. Proponents of galvanized steel, who may use it to construct or repair steel structures, for example, benefit from lower maintenance and repair costs because of its special properties.
d.the electrolyte is acidified copper sulphate solution anode is impure copper and cathode is thin strip of pure copper.
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Explanation:
microorganism, or microbe, is a microscopic organism, which may exist in its single-celled form or a colony of cells. The possible existence of unseen microbial life was suspected from ancient times, such as in Jain scriptures from 6th century BC India