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प्रश्न
Name an alloy of copper. State its chemical composition and any one use.
उत्तर
An alloy of copper is bronze. The constituent elements of bronze are copper and tin.
The composition of bronze is 90 percent copper and 10 percent tin. This alloy of copper is very strong and prevents corrosion.
Bronze is used in the manufacturing of statues, medals, cooking vessels etc.
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संबंधित प्रश्न
What is an alloy?
Give reasons:
Platinum, gold and silver are used to make jewellery.
Explain how painting of an iron gate prevents it from rusting.
Explain why rusting of iron objects is faster in coastal areas than in deserts.
The chemical reaction involved in the corrosion of iron metal is that of:
(a) oxidation as well as displacement
(b) reduction as well as combination
(c) oxidation as well as combination
(d) reduction as well as displacement
Explain why, iron sheets are coated with zinc.
Explain why, through aluminium is more reactive than iron, yet there is less corrosion of aluminium when both are exposed to air.
Give the constituents and one use of brass.
Explain why, the galvanised iron article is protected against rusting even if the zinc layer is broken.
Corrosion can be an advantage in some case.Explain ?
What is "rusting"? Describe with a labelled diagram an activity to investigate the conditions under which iron rusts.
Give reason.
An iron article should be given a coat of paint
Give reason.
Copper and brass utensils should be tinned.
Find the odd one out and give its explanation.
Write the name.
An alloy of copper and tin-
Draw a neat labelled diagram.
Anodizing
Give preventive methods by giving examples of corrosion?
What is rust?
Galvanisation is a process used to prevent the rusting of which the following?
Give an example of a chemical reaction for each of the following situations:
Sound is produced
