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प्रश्न
Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why.
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उत्तर
- The mass per unit volume of a substance is called density (density = mass/volume). As the volume of a substance increases, its density decreases.
- Though ice is a solid, it has a large number of empty spaces between its particles, which are larger than the spaces between the particles of water.
- Thus, the volume of ice is greater than that of water. Hence, the density of ice is less than that of water. A substance with lower density than water can float on water. Therefore, ice floats on water.
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संबंधित प्रश्न
Name one property of liquids and gases which tells us that their molecules are moving constantly.
Fill in the following blank with suitable words :
The arrangement of particles is less ordered in the ______ state. However, there is no order in the ______ state.
State two characteristic properties of a liquid.
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Why are gases so easily compressible whereas it is almost impossible to compress a solid or a liquid?
Complete the given analogy.
Solid : Table :: ________ : Water
Where is water available in the liquid state?
Liquid is affected by gravity less than anything.
Write scientific reason.
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