UKPSC PCS 2025 · Question 82 of 150

The thickness of the ozone layer from base to top of the atmosphere is measured in:

Environment

ADobson unitCorrect
BDecibel unit
CAngstrom unit
DCentigrade unit

Answer: A. Dobson unit

Explanation

Ozone layer thickness is measured in Dobson units.

Source: UKPSC Combined Upper PCS Prelims 2025 GS (Paper-I) held 29-Jun-2025, Series-A (SDJ), via teachingninja.in; answers from UKPSC provisional answer key Series A (prepp.in)

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