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Straws are used to take soft drinks . Wh...

Straws are used to take soft drinks . Why ?

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Straws are used because when we suck through the straw , the pressure inside the straw becomes less than the atmospheric pressure .Due to the difference in pressure the soft drink rises in the straw and we are able to enjoy it conveniently .
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KUMAR PRAKASHAN-MECHANICAL PROPERTIES OF FLUIDS -SECTION -C (Objective Questions) (VSQs)
  1. Mountaineers suffer from nose bleeding (nostril ) at higher altitudes.

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  2. It is difficult to heal wound on mountain.

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  3. Straws are used to take soft drinks . Why ?

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  4. Explain why are water storage dam walls thicker at the bottom.

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  5. Why does an air bubble form in water grow in size from bottom when it ...

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  6. Why is mercury used in a barometer ?

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  7. What are difficulties arised by using water in a barometer instead of ...

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  8. What does it mean when a height of a barometer is falling ?

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  9. What does it mean when a height of a barometer is rising ?

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  10. A barometer kept in a elevator accelerating upwards with acceleration ...

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  11. A barometer kept in an elevator accelerating downwards with accelerat...

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  12. What is buoyant force ?

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  13. Why does a ship made of iron float while a piece of iron sinks in wate...

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  14. A person is sitting in aboat floating in a lake . This person fills a ...

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  15. A container of liquid is free fall without flyout of liquid is this co...

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  16. When two corks , one small and one big are taken into a vessel filled ...

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

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  18. When stirring by spoon is stop in a milk , it become at rest after s...

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  19. Give the dimensional formula of coefficient of viscosity .

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  20. Define Poise .

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