Question

What is meant by corrosion? (i) Why do aluminium sheets not corrode easily.

Answer 1

the process of detoriation of metal as a result of its reaction with air and water is called corrosion
in case of iron the corrosion is known as rusting of iron,

Answer 2

$\large\boxed{\fcolorbox{blue}{yellow} {Answer}}$

Corrosion :-

The slow process of decay or oxidation of metal due to the effect of air, moisture and acids on it is know as corrosion.

Gold ornaments do not get corroded.

$\bold{\boxed{Justification}}$

1. Gold is a nobel metal. There is no effect of moist air or action of acid on it at any temperature.

2. Pure gold is a very soft metal, it breaks and gets bent easily. Hence, in gold ornaments, gold is alloyed with other metals like copper or silver in appropriate proportion to make it hard and resistant to corrosion.

Hence, gold ornaments do not get corroded.

Hope it helps!

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