Should I underline keywords in UPSC Mains answers, and how?

Why Underlining Matters in UPSC Evaluation

UPSC Mains evaluators assess approximately 30–50 answer booklets per day — each booklet containing 20 answers across a 3-hour paper. The physical reality of reading hundreds of pages under time pressure means examiners rely heavily on visual cues: headings, structure, bullets, and underlining to quickly locate the core argument and key facts of each answer.

Underlining sends a direct signal: this is what I consider the most important element of this answer. When used sparingly and purposefully, it guides the examiner's eye to exactly where you want it to go.

This is not a minor stylistic choice. Toppers consistently cite presentation — including selective underlining — as one of the factors that distinguishes their answer sheets. A review of Srushti Jayant Deshmukh's (Rank 5, 2018) answer copy shows careful, selective underlining of key constitutional terms and data points, not full sentences.

The 3–5 Keyword Rule

Underline 3–5 keywords or key phrases per answer — not more. Choose:

1. The central concept or legal citation — e.g., Article 356, Basic Structure Doctrine, Principle of Non-Refoulement
2. The key data point — e.g., 21.76% forest cover (FSI 2023), Rs. 2.37 lakh crore MGNREGS budget
3. A specific scheme or institution name — e.g., Pradhan Mantri Jan Dhan Yojana, National Green Tribunal
4. The answer's core argument in the conclusion — one phrase that summarises your position

What NOT to Underline

Single vs. Double Underline

• Single underline: Key terms, important concepts, significant data points, specific scheme names
• Double underline: The single most critical point in the answer — use once per answer, at most

Some candidates also use a box around the most important term in lieu of double underlining. Both approaches work — choose one and apply consistently across all 20 answers.

Practical Underlining Technique

1. Underline while writing, not retroactively. Going back to underline after completing an answer wastes 30–60 seconds per answer — that is 10 minutes across a 20-question paper. Identify your key terms as you plan, and underline them in the moment.
2. Keep underlines clean. Draw the line under the text, not through it. A line through letterforms reduces legibility.
3. Do not switch pen or use a different colour for underlining — changing implements mid-answer breaks the visual consistency of the booklet.
4. Consistent position: Underline key terms wherever they appear — introduction, body, or conclusion. But limit total count across the entire answer.

The Over-Underlining Failure Mode

An answer where 30–40% of text is underlined fails the purpose in two ways:

1. Signal loss: The examiner's eye is no longer drawn to anything specific — every item appears equally important, which means no item is emphasised.
2. Inference about quality: An examiner reading a heavily underlined booklet may infer that the candidate is compensating for weak structure or thin content with visual noise.

Calibration test: After completing a practice answer, count your underlines. More than 7 in a 250-word answer is likely too many. More than 4 in a 150-word answer is definitely too many.

Topper Insight: Underlining Is One Element of a System

Underlining works best as part of a coherent presentation system — not in isolation. The full system is:

• Clear question number before each answer
• Appropriate headings for sub-themes
• Mix of prose and bullets
• Selective underlining of 3–5 key terms
• One diagram where it genuinely adds value

If any of these elements is absent, the underlining contributes less. If all are present, the examiner can navigate and evaluate your booklet efficiently — which is the single most important presentation outcome.