One day you and your friends were discussing about matter. He believes that matter is continuous like a block. Initially, you have also agreed with him but later one observation changed your perception about matter. Now you believe it is made up of discrete particles. The observation was

Evaporation of water

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Complete dissolution of salt in water

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Freezing of water

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Salt settles at the bottom of the glass.

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Solution

The correct option is B
Complete dissolution of salt in water

When salt is added to water, it gets completely dissolved in it. So, if matter was like a continuous block, then there must be no space for salt to get dissolved. Therefore we can conclude that matter is composed of many small particles.

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One day you and your friends were discussing about matter. He believes that matter is continuous like a block. Initially, you have also agreed with him but later one observation changed your perception about matter. Now you believe it is made up of discrete particles. The observation was

The correct option is B Complete dissolution of salt in water When salt is added to water, it gets completely dissolved in it. So, if matter was like a continuous block, then there must be no space for salt to get dissolved. Therefore we can conclude that matter is composed of many small particles.