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What do you understand by atmospheric pr...

What do you understand by atmospheric pressure ?

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ICSE-PRESSURE IN FLUIDS AND ATMOSPHERIC PRESSURE-Exercise -4(B)
  1. What do you understand by atmospheric pressure ?

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  2. The value of atmospheric pressure on the Earth's surface is .........

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  3. What physical quantity is measured in torr ? How is it related to the ...

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  4. Name the physical quantity which is expressed in the unit .atm.. State...

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  5. We do not feel uneasy even under enormous pressure of the atmosphere a...

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  6. Describe an experiment to demonstrate that air exerts pressure.

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  7. Explain the following : (i) A balloon collapses when air is removed ...

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  8. Why does the liquid rise in a syringe when its piston is pulled up?

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  9. How is water drawn up from a well by a water pump ?

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  10. A partially inflated balloon is placed inside a bell jar connected to ...

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  11. What is the purpose of a barometer ?

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  12. What is a barometer ? How is a simple barometer constructed ?

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  13. Explain how is the height of mercury column in the tube of a simple ba...

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  14. Illustrate with the help of a lebelled diagram of a simple barometer ...

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  15. Why is the barometric height used as a unit to express the atmosphric ...

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  16. What is meant by the statement “the atmospheric pressure at a place is...

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  17. How will you show that there is vacuum above the surface of mercury i...

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  18. How is the barometric height of a simple barometer affected if (a) i...

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  19. State two uses of a barometer.

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  20. State two advantages of use of mercury as a barometric liquid.

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