Question

Plzz answer the following..1) how do metals and nonmetals react differently with oxygen? 2) What is corrosion of metal? give one instance where corrosion is useful 3) Give any three methods to prevent corrosion.
4)State the advantages of alloy.

Answer 1

1.Metal react with oxygen to form metal oxide whereas non metal react to form non metallic oxide.
2.corrision of metal is the process by which metal react with substance in sorrounding area to form dull layer on it.3.Three method to prevent corrosion are:
a.by coating it .
b.by keep it in unreactive environment
c.by making it surface oilly
4.Alloy has mixed property of two substance which give it the property of both substance.

Answer 2

Hey frnd , here is your answer.Metals react with oxygen to form basic oxides and non metals form oxides.Some metals react with oxygen at room temperature while others react on heating .

corrosion of metal means when a chemical reaction taken place between the metal and moist air as a result metal get tarnished is called corrosion

Three methods to prevent corrosion are-
1 applying grease or oil
2 painting
3 eletroplating

advantages of alloy are-
1 increasing hardness of metals
2 increasing resistance to corrosion
3 changing physical or chemical properties
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