Q8. A color model is shown in the figure with color codes: Yellow (Y), Magenta (M), Cyan (Cy), Red (R),
Blue (BI), Green (G), and Black (K). Which one of the following options displays the color codes that are
consistent with the color model?

Introduction

Color models are frequently tested in exams related to biotechnology, imaging, printing technology, and visual perception.
In this question, a color model diagram is shown using the color codes Yellow (Y), Magenta (M), Cyan (Cy), Red (R), Blue (Bl), Green (G), and Black (K).

The task is to identify which option correctly represents the color overlaps consistent with the shown model.

Understanding the Given Color Model

The figure represents the CMY (Cyan–Magenta–Yellow) color model, which is a subtractive color model commonly used in printing.

Key Rules of the CMY Color Model

✔ These overlaps are exactly what we see in the reference diagram:

• Three large circles: Y, M, Cy

• Center overlap: Black (K)

• Pairwise overlaps forming R, G, Bl

Correct Answer

✅ Correct Option: (B)

Option B correctly places:

• Red (R) at the overlap of Yellow & Magenta

• Blue (Bl) at the overlap of Magenta & Cyan

• Green (G) at the overlap of Yellow & Cyan

• Black (K) at the intersection of all three

• Individual regions labeled Y, M, Cy correctly

Thus, Option B is fully consistent with the CMY color model.

Explanation of All Options

Option (A) – Incorrect ❌

• Incorrect placement of Green (G) and Black (K)

• Some overlapping regions do not follow CMY subtraction rules

• Violates correct pairwise color formation

Option (B) – Correct ✅

• All color overlaps match CMY principles

• Correct mapping of R, G, Bl, and K

• Faithfully reproduces the given color model

✔ This option is scientifically accurate

Option (C) – Incorrect ❌

• Black (K) is misplaced

• Pairwise overlaps are inconsistent with CMY mixing

• Blue and Green regions are incorrectly assigned

Option (D) – Incorrect ❌

• Missing correct Green (G) placement

• Overlaps do not yield expected secondary colors

• Does not represent a valid subtractive model

Why This Question Is Important

• Tests understanding of subtractive color mixing

• Frequently asked in CSIR-NET, GATE, IIT-JAM, and Life Science exams

• Helps differentiate RGB (additive) vs CMY (subtractive) models

Final Answer Summary

Key Takeaway

👉 In the CMY color model, remember:
C + M = Blue, M + Y = Red, Y + C = Green, and C + M + Y = Black.