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Why do ink pens start leaking at high al...

Why do ink pens start leaking at high altitudes?

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ICSE-PRESSURE IN FLUIDS AND ATMOSPHERIC PRESSURE-Exercise -4(B)
  1. What is a barometer ? How is a simple barometer constructed ?

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

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

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

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

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

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

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  8. State two uses of a barometer.

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

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  10. Water is not used as a barometeric liquid because :

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  11. Mention two demerits of a simple barometer and state how they are remo...

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  12. Draw a simple labelled diagram of a Fortin barometer and state how it ...

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  13. State two advantages of an aneroid barometer over a simple barometer.

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  14. How is the reading of a barometer affected when it is taken to (i) a ...

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  15. How does atmospheric pressure change with altitude ? Draw an approxima...

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  16. State two factors which affect the atmospheric pressure as we go up.

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  17. Why do ink pens start leaking at high altitudes?

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  18. Why does nose start bleeding on high mountains?

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  19. What is an altimeter ? State its principle. How is its scale calibrate...

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  20. What do the following indicate in a barometer regarding weather : (a...

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