Question:
Difficulty in measuring rainfall in hilly regions is due to:
Reason I: Terrain is large in slope differences over a few vertical meters.
Reason II: Rainfall in the hilly region is localized independent events.
In light of the above reasons, choose the most appropriate answer from the options given below.
Difficulty in measuring rainfall in hilly regions is due to:
Reason I: Terrain is large in slope differences over a few vertical meters.
Reason II: Rainfall in the hilly region is localized independent events.
In light of the above reasons, choose the most appropriate answer from the options given below.
Reason I: Terrain is large in slope differences over a few vertical meters.
Reason II: Rainfall in the hilly region is localized independent events.
In light of the above reasons, choose the most appropriate answer from the options given below.
Show Hint
Orographic rainfall creates highly localized precipitation in mountains, so a dense rain-gauge network is required for reliable measurement.
Updated On: Aug 24, 2026
- Both I and II are correct and II is the correct explanation of I
- Both I and II are correct but II is not the correct explanation of I
- I is correct but II is incorrect
- I is incorrect but II is correct
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Rainfall measurement in mountainous regions is challenging because topography strongly affects rainfall distribution and accessibility of rain-gauge stations.
Step 2: Detailed Explanation:
Reason I: Correct.
Steep slopes cause rapid changes in elevation over short horizontal distances, leading to large spatial variation in rainfall and making gauge placement difficult.
Reason II: Correct.
Rainfall in hilly regions is often localized due to orographic lifting and convective activity. Different valleys and ridges may receive different rainfall amounts during the same event.
However, Reason II does not directly explain the terrain-related difficulty mentioned in Reason I. The two statements are independently true.
Step 3: Final Answer:
Both reasons are correct, but II is not the correct explanation of I. Hence, the answer is (B).
Rainfall measurement in mountainous regions is challenging because topography strongly affects rainfall distribution and accessibility of rain-gauge stations.
Step 2: Detailed Explanation:
Reason I: Correct.
Steep slopes cause rapid changes in elevation over short horizontal distances, leading to large spatial variation in rainfall and making gauge placement difficult.
Reason II: Correct.
Rainfall in hilly regions is often localized due to orographic lifting and convective activity. Different valleys and ridges may receive different rainfall amounts during the same event.
However, Reason II does not directly explain the terrain-related difficulty mentioned in Reason I. The two statements are independently true.
Step 3: Final Answer:
Both reasons are correct, but II is not the correct explanation of I. Hence, the answer is (B).
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