Question

An iron and a cork are placed in a cup of water? What do you observe? Justify ​

Answer 1

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• Iron get a brown coating on it which we called rust.
• in case of cork we don't observe any change.

Hope it will help you ☺️

Answer 2

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Density of cork is less than density of water so as the density of cork is less, cork floats in water because surface area of cork is more as compared to its weight. But density of iron nail is more then density of water so it results in sinking of iron nail in water.