Q27 (IAS/2001) Geography › Indian Physical Geography › Indian rainfall patterns Answer Verified

Assertion (A) : Anti-cyclonic conditions are formed in winter season when atmospheric pressure is high and air temperatures are low. Reason (R) : Winter rainfall in Northern India causes development of anticyclonic conditions with low temperatures.

Both A and R are individually true, and R is the correct explanation of A

Both A and R are individually true, but R is NOT a correct explanation of A

A is true, but R is false

A is fasle, but R is true

Result

Your answer: — · Correct: C

Explanation

Assertion (A) is true: anticyclones are high-pressure systems that bring calm, stable weather and, in winter, low surface temperatures due to clear skies and radiational cooling; textbooks note anticyclonic centres have high pressure with low winter temperatures and fine weather conditions [1]. Upper-air anticyclonic conditions over Afghanistan–Pakistan produce descending winds and dry, stable conditions over north‑west India, consistent with winter anticyclones [2]. Reason (R) is false: winter rainfall in northern India is produced by west‑to‑east moving cyclonic (low‑pressure) western disturbances originating over the Mediterranean/western Asia, not by rainfall causing anticyclones; thus winter precipitation results from cyclonic incursions, not the development of anticyclones [3]. Therefore A true, R false.

Sources

[1] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 14: Climate > Cyclonic Activity > p. 143
[2] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 4: Climate of India > JET STREAM AND INDIAN MONSOON > p. 8
[3] CONTEMPORARY INDIA-I ,Geography, Class IX . NCERT(Revised ed 2025) > Chapter 4: Climate > The Cold Weather Season (Winter) > p. 28

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Assertion (A) : Anti-cyclonic conditions are formed in winter season when atmospheric pressure is high and air temperatures are low. Reason (R) : Winter rainfall in Northern India causes development of anticyclonic conditions with low temperatures.

Explanation

SIMILAR QUESTIONS

Assertion (A) : In temperate cyclones winds below from the periphery towards its centre. Reason (R) : There is high pressure in the centre of temperate cyclone.

Assertion (A) : Areas lying within five to eight degrees latitude on either side of the equator receive rainfall throughout the year. Reason (R) : High temperatures and high humidity cause convectional rain to fall mostly in the afternoons near the equator.

Assertion (A) : Despite low evaporation and stable stratification of the atmosphere, salinity is high in polar regions. Reason (R) : Sea water freezes leaving the remaining water saline than before.

Assertion (A) : 60°-65° latitudes in both the hemispheres have a low pressure belt instead of high pressure. Reason (R) : The low pressure areas are permanent over oceans rather than on land.