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Atmospheric Pressure

Which of the ...

Question

Which of the following does not work on the existence of atmospheric pressure ?
(a) rise of iodine solution in the glass tube of dropper
(b) rise of cold drink in a long plastic straw
(c) sticking of suction hook on the wall of a room
(d) rise of mercury in glass tube of thermometer

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Solution

Correct option is d) rise in the level of mercury in glass tube of thermometer.
The mercury level rises in thermometer due to rise in temperature.

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