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Why does a stone sink when placed on the...

Why does a stone sink when placed on the surface of water?

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When the stone is placed on the water surface, the upward buoyant force is less than the downward force, i.e., the weight of the stone. Hence the stone sinks when placed on the water surface.
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PREMIERS PUBLISHERS-PROPERTIES OF MATTER-OTHER IMPORTANT QUESTION & ANSWERS (CONCEPTUAL QUESTIONS)
  1. Why tiny drops of fog act as rigid bodies?

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  2. Small drops of mercury are found to assume a spherical shape. Why?

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  3. Why does a stone sink when placed on the surface of water?

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  4. Among solids, liquids and gases, which can have all the three modulus ...

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  5. Write copper, steel, glass and rubber in the order of increasing coeff...

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  6. Which is more elastic -water or air?

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  7. Why are springs made of steel & not of copper ?

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  8. Following are the graphs of elastic materials which one corresponds to...

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  9. It is difficult to stop bleeding from a cut in human body at high alt...

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  10. In soldering, addition of flux makes soldering easily why?

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  11. Which type of strain is there, when a spiral spring is stretched by a ...

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  12. When bits of camphor are dropped on water, they move erratically. Why?

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  13. What will be the effect on the angle of contact of a liqud if the temp...

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  14. We can cut vegetables easily with a sharp knife as compared to a blunt...

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  15. Why water is not used in barometers?

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  16. The dams of water reservoir are made thick near the bottom. Why?

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  17. A man is sitting in a boat, which is floating on a pond. If the man dr...

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  18. Why is it easier to swim in sea water than in river water?

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  19. Stirred liquid comes to rest after some time. Why?

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  20. Why machine parts are not jammed in the summer?

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