NSTSE 2025–26: National Level Science Talent Search Examination

What is NSTSE?

The National Level Science Talent Search Examination (NSTSE) is a skill-based diagnostic test conducted by the Unified Council for students from Class II to XII. It evaluates conceptual understanding, critical thinking, and problem-solving, aligning with CBSE, ICSE/ISC, and state boards.

Exam Pattern

• Mode: Offline (schools) & Online

• Duration: 90 minutes for all classes

• Format: Objective-type questions, no negative marking

• No. of Questions & Marks:

  • Class II: 50 Q – 50 marks
  • Classes III–V: 60 Q – 60 marks
  • Classes VI–XII: 100 Q – 100 marks 

Section-wise Breakdown

• Class II: Mathematics (25), Science (25) 
• Classes III–V: Mathematics (≈25), Science (~30), Critical Thinking (5) 
• Classes VI–X: Mathematics (25), Physics (10), Chemistry (10), Biology (10), Critical Thinking (5) 
• Classes XI–XII PCM: Mathematics (25), Physics (15), Chemistry (15), Critical Thinking (5) 
• Classes XI–XII PCB: Biology (25), Physics (15), Chemistry (15), Critical Thinking (5) 

Syllabus

Based on 85% CBSE curriculum, also relevant for ICSE/ISC and state boards .

Highlights:

• Classes II–V: Mathematics & Science fundamentals + early logical reasoning
• Classes VI–X: In-depth concepts in Mathematics, Physics, Chemistry, Biology + Critical Thinking/Reasoning
• Classes XI–XII: Advanced topics in chosen stream (PCM or PCB) + standard critical thinking questions 

Marking Scheme

• Correct Answer: +1 mark (standard), Achievers section also scored per section breakdown
• Incorrect/Unattempted: 0 marks
• No negative marking for any class

Cheat Sheet & Preparation Tips

Critical Thinking

• Focus on patterns, series, classification, logic puzzles
• Practice decision-based and inductive reasoning questions

Mathematics & Science (Lower Classes)

• Strengthen arithmetic, geometry, measurements, basic physics/biology through NCERT
• Build conceptual clarity with flashcards and practice sets

Subject-Specific (VI–X)

• Mathematics: Number systems, algebraic expressions, geometry, data interpretation
• Science Trio: Physics (motion, light), Chemistry (matter, reactions), Biology (life processes)

Higher Classes (XI–XII)

• PCM: Advanced calculus, algebra, mechanics, thermodynamics, organic chemistry
• PCB: Deep dive into physiology, cell biology, environmental science
• Critical Thinking: High-order problem-solving

General Preparation

• Simulate full-length tests under timed conditions
• Analyze errors; revise targeted topics quickly
• Refer to Unified Council Success Series and sample papers
• Build conceptual-level understanding instead of rote memorization

Rewards & Recognition

• Student Performance Reports (SPR): Subject and skill-wise analysis, national/state/school ranks
• Awards: Medals, trophies, cash prizes, top-performing scholarships (state & national levels)
• School Reports: Institutional performance breakdown, participation awards, excellence recognitions

Quick Facts Table