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प्रश्न
Fill in the following blanks with suitable words:
............ and .............. are necessary for the rusting of iron.
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उत्तर
Air (oxygen) and water are necessary for the rusting of iron.
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संबंधित प्रश्न
Why do we apply paint on iron articles?
Explain why rusting of iron objects is faster in coastal areas than in deserts.
What special name is given to their corrosion of iron?
Explain why, iron sheets are coated with zinc.
What is meant by 'rusting of iron'? With the help of labelled diagrams, describe an activity to find out the conditions under which iron rusts.
Name two metals which resist corrosion due to the formation of a thin, hard and impervious layer of oxide on their surface.
Name an alloy of copper. State its chemical composition and any one use.
Explain why, the galvanised iron article is protected against rusting even if the zinc layer is broken.
State under what conditions corrosion is faster ?
Identify the process shown in the diagram and explain it in short
Write three methods of preventing rusting of iron.
Answer the following question.
List two properties of alloys.
Give reason.
Copper and brass utensils should be tinned.
Give a reason why rust turns moist red litmus blue.
State whether the statement given below is true or false. If false write the correct statement.
Either oxygen or moisture is essential for rusting.
Bronze : _______ : : Stainless steel : Fe + Cr + C
Find the odd one out and give its explanation.
What is rust?
Copper objects lose their shine and form green coating of ____________.
In ______ process a layer of molten tin is deposited on metals.
