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प्रश्न
Write a few lines on the blackboard with a chalk. Now observe the chalk. What changes do you see in the chalk?
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उत्तर
The chalk reduces in size after writing on the blackboard. It becomes flat on the side from which we use it for writing.
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संबंधित प्रश्न
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Fill in the following blanks with suitable words :
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Liquids have ______.
Define the term matter.
