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How is the thickness of the ozone in a column of air from the ground to the top of the atmosphere measured?

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in Biology – Class 12 by (271k points)
How is the thickness of the ozone in a column of air from the ground to the top of the atmosphere measured?

(a) Dobson units

(b) Hertz

(c) Centimeter

(d) Ampere

I have been asked this question during an interview.

My question is from Environmental Issues in chapter Environmental Issues of Biology – Class 12

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Right option is (a) Dobson units

Explanation: Dobson unit (DU) is used to measure the thickness of the ozone in a column of air from the ground to the top of the atmosphere. A layer of pure ozone that is 0.01 mm thick at standard temperature and pressure is equivalent to one Dobson unit.

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