Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: There is change in the slope of double-mass curve of the watershed.
Reason R: Streamflow has been changed due to watershed development activities.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both Statement I and Statement II are correct
• B. Statement I is correct but Statement II is incorrect
• C. Statement I is incorrect but Statement II is correct
• D. Statement I and Statement II are incorrect

Hint:

A good rain-gauge site is selected for representativeness, accessibility, and long-term stability rather than for receiving the highest rainfall.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Rain-gauge stations should be located at representative sites where rainfall can be measured accurately over long periods without obstruction or relocation.

Step 2: Detailed Explanation:
Statement I: Incorrect.
A rain-gauge station should ideally be installed at a permanent, representative location so that long-term rainfall records remain consistent.
Statement II: Correct.
The objective is not to choose the place receiving maximum rainfall but rather a location that represents the rainfall characteristics of the surrounding region.
Hence, only Statement II is correct.

Step 3: Final Answer:
The correct answer is (C).