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Question

Which of the following plays an important part while drinking a liquid with a straw?

A
Humidity
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B
Temperature
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C
Atmospheric pressure
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D
Composition of air
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Solution

The correct option is C Atmospheric pressure
When you suck on a straw, stuck into liquid it lowers the pressure in the straw. That makes atmospheric pressure higher than the pressure in the straw which force the liquid to go up into the straw and into your mouth. So, atmospheric pressure plays important role while drinking a liquid with a straw.

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