Given below are two statements, one is labelled as Assertion (A) and the other one is labelled as Reason (R).

Assertion (A): The notation of Munsell colour chart is 2.5YR5/6.

Reason (R): Because hue is 2.5 YR, value is 5 and chroma is 6.

In light of the above statements, choose the correct answer from the options given below.

Correct option is A

Explanation of the Correct Option (a): Both (A) and (R) are true and (R) is the correct explanation of (A)
Why Assertion (A) is CORRECT:
· The Munsell colour notation follows the format:
· Hue Value/Chroma
· The given notation 2.5YR5/6 is a valid Munsell colour expression.
· It is commonly used in soil colour description.
Why Reason (R) is CORRECT:
· In 2.5YR5/6:
· Hue = 2.5 YR (Yellow-Red)
· Value = 5 (lightness or darkness)
· Chroma = 6 (intensity or saturation)
· This correctly explains how the notation is constructed.
Why (R) Correctly Explains (A):
· The reason directly breaks down the components of the notation mentioned in the assertion.
· Hence, (R) is the correct explanation of (A).
Explanation of Other Options
Option (b):
· Incorrect because:
· The reason does correctly explain the assertion.
Option (c):
· Incorrect because:
· Reason (R) is factually correct.
Option (d):
· Incorrect because:
· Assertion (A) is also correct.
Key Points Related to the Question
· Munsell colour system = Hue, Value, Chroma
· Format: Hue Value/Chroma
· Widely used in Soil Science for soil profile description
· Helps in identifying:
· Drainage conditions
· Organic matter status
· Oxidation–reduction conditions