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UPSC 2003: Assertion (A): The amount of moisture in the atmosphere is related to latitude. Reason (R): The capacity to hold moisture in the form of water vapour is related to temperature.
(a)Both A and R are individually true and R is the correct explanation of A
(b)Both A and R are individually true but R is NOT the correct explanation of A
(c)A is true but R is false
(d)A is false but R is true
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Not attemptedCorrect Answer: (a) Both A and R are individually true and R is the correct explanation of A
Low-latitude zones are warmer, allowing air to retain much more water vapour, so atmospheric moisture generally declines pole-ward; thus A is true. This relationship exists because the capacity of air to hold water vapour increases exponentially with temperature (Clausius-Clapeyron relationship), so R is also true and correctly explains A. ([iasexamportal.com](https://iasexamportal.com/paper/IAS_General_Studies_Prelims_Paper_2003_part-1))
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Frequently Asked Questions
What is the correct answer to this UPSC 2003 Geography question?▼
The correct answer is option (a): Both A and R are individually true and R is the correct explanation of A. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Atmosphere & Climatology question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2003, GS Paper 1, as Question 109. It falls under Geography > Atmosphere & Climatology.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Atmosphere & Climatology?▼
UPSC has asked 70 questions from Atmosphere & Climatology (under Geography) across multiple years. Visit the topic page to see the full list and year-wise trends.