Rahul was a student of Class VII. His father purchased a new bicycle for him on his birthday. After few months, he found that the cycle chain and even the handle gets rusted. His father advised him to apply a coating of paint to the cycle and not to keep it in the open in future.
Now, answer the following questions:
(a) Why his cycle gets rusted?
(b) What do you mean by rusting of iron?
(c) What values are shown by Rahul’s father? [Value Based Question]
Answers
Answered by
3
Answer:
Answer:
a) cycle gets rusted as iron of cycle react with water in atmosphere and oxygen
b) Rust is an iron oxide, a usually red oxide
formed by the redox reaction of iron and
oxygen in the presence of water or air
moisture.
4Fe + 302 +H20→2Fe203
c) knowledge of science
Answered by
22
Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.
- (A) Rahul’s cycle was kept in the open for a longer time. As air contains both oxygen and moisture. Thus, in the presence of oxygen and water, his cycle slowly gets rusted.
- (B) If iron objects are left in humid conditions for a longer time, they get covered with reddish brown ferric oxide (Fe2O3) layer. This is called rusting of iron.
- (C) Rahul’s father is aware and intelligent, he knows the fact that if he keeps an iron piece in an open environment it gets rusted with time. To protect a a iron particle we should paint a cycle with paint.
Hence, to protect the chain cycle we need to paint the cycle.
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