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Question

An egg sinks in pure water, but it floats in salt water. Why?


  1. The density of egg decreases in salt water.

  2. The density of water decreases with the addition of salt.

  3. The density of water increases with the addition of salt.

  4. The density of egg increases in salt water.


Solution

The correct option is C

The density of water increases with the addition of salt.


As salt is added to water its density increases. If the amount of salt added is enough to increase the density of salt water greater than the density of egg, the egg floats.

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