(a) Define corrosion.
(b) What is corrosion of iron called ?
(c) How will you recognise the corrosion of silver ?
(d) Why corrosion of iron is a serious problem ?
(e) How can we prevent corrosion of iron ?
CBSE Class X Science LA (5 Marks)
Answers
Answered by
306
(a) Corrosion : The process in which metals breakdown gradually by the air, moisture or a chemical
on their surface.
(b) Rusting of Iron
(c) By the development of a black coating on silver.
(d) Every year enormous amount of money is spent to replace damaged iron.
(e) Paint, galvanization, electroplating
(b) Rusting of Iron
(c) By the development of a black coating on silver.
(d) Every year enormous amount of money is spent to replace damaged iron.
(e) Paint, galvanization, electroplating
Answered by
33
a) corrosion is slow eating process of metal due to the action of moisture and air(gases)
b) it is called rust
c) silver possesses a shiny mettalic grey color w when it get it formed a a black layer of silver sulphide which is the mark of corrosion
d)The engineering properties (strength, hardness) decreases proportionally with the magnitude of corrosion. Hence, the stability of the structure decreases, a serious phenomenon.
e) we can prevent rusting by applying paint greasing alloying anodizing electroplating etc.
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