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Q.

Is it true that when we drink a soft drink with the help of a straw, the liquid rises in the straw due to atmospheric pressure?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
Air pressure:
“The pressure created by air in any container or open space.”
Atmospheric pressure:
“The pressure created by air present in the atmosphere.”
In the straw, when we drink a soft drink, we create a vacuum by sucking out the air from it. This vacuum causes a lack of air pressure inside the straw. Since the atmospheric pressure is more significant on the outside of the straw, the liquid is forced into and up the straw and into your mouth.
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