Instrument that can be used to demonstrate pull due to vaporisation of water is
A
Potometer
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B
Atmometer
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C
Auxanometer
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D
Anemometer
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Solution
The correct option is B Atmometer A potometer is a device used for measuring the rate of water uptake of a leafy plant shoot. An atmometer or evaporimeter is a scientific instrument used for measuring the rate of water evaporation from a wet surface to the atmosphere. An auxanometer is an apparatus for measuring increase or rate of growth in plants.
An anemometer is a device used for measuring the speed of wind, and is also a common weather station instrument. Thus, the correct answer is option (B).