TN 10th Science 2nd Mid Term Question Papers & Answer Keys 2026-27 (Download PDF)

📋 TN 10th Science 2nd Mid Term 2026–2027: Quick Overview

📚 Quick Navigation — All 10th Standard 2nd Mid Term Subjects:

📖 TN 10th Science 2nd Mid Term Syllabus & Portions

The Second Mid Term Science exam integrates Physics, Chemistry, and Biology units scheduled for October and November:

• இயற்பியல் (Physics): Unit 4 — Electricity (மின்னோட்டவியல்): Electric current, potential difference, Ohm’s law, resistance, resistors in series and parallel, Joule’s heating effect, domestic electric circuits. Unit 5 — Acoustics (ஒலியியல்): Sound waves, velocity of sound, reflection of sound, echo, reverberation, Doppler effect and its applications.
• வேதியியல் (Chemistry): Unit 9 — Solutions (கரைசல்கள்): Components of solutions, types of solutions, solubility, factors affecting solubility, hydrated salts. Unit 10 — Types of Chemical Reactions (வேதிவினைகளின் வகைகள்): Combination, decomposition, single and double displacement, neutralization, reversible/irreversible reactions, ionic product of water, pH scale.
• உயிரியல் (Biology): Unit 15 — Nervous System / Plant and Animal Hormones (தாவர மற்றும் விலங்கு ஹார்மோன்கள்): Auxins, Gibberellins, Cytokinins, Abscisic acid, Ethylene, Pituitary, Thyroid, Pancreas, Adrenal glands. Unit 16 — Plant and Animal Reproduction (தாவரங்கள் மற்றும் விலங்குகளில் இனப்பெருக்கம்): Vegetative propagation, structure of a flower, pollination, fertilization, human reproductive system. Unit 17 — Genetics (மரபியல்): Mendel’s laws of inheritance, Monohybrid and Dihybrid crosses, Chromosomes, DNA structure and replication.

📝 10th Science Question Paper Pattern & Blueprint (50 Marks)

• Part I — Multiple Choice Questions (7 × 1 = 7 Marks): Balanced representation across Physics (2), Chemistry (2), and Biology (3).
• Part II — Short Answer Questions (5 × 2 = 10 Marks): 5 questions to be answered out of 7 (Question No. 14 is compulsory numerical/reasoning problem).
• Part III — Detailed 4-Mark Questions (5 × 4 = 20 Marks): 5 questions to be answered out of 7 (Question No. 21 is compulsory). Includes chemical equation balancing, difference between series/parallel circuits, or DNA structure.
• Part IV — 7-Mark Essay / Multi-Part Questions (1 or 2 Questions = 13 Marks): Structured questions with sub-divisions (e.g., Explain Ohm’s law with circuit diagram + calculate equivalent resistance; or Explain Mendel’s dihybrid cross with checkerboard).

📅 Tamil Nadu Class 10 (SSLC) 2nd Mid Term Exam Timetable 2026

The Second Mid-Term examinations are held across Tamil Nadu schools during the 3rd or 4th week of November according to the following standard subject schedule:

Note: Individual school timings may vary slightly by district CEO notifications. View full state timetable: TN 2nd Mid Term Exam Time Table PDF.

TN 10th Science 2nd Mid Term District Question Papers & Answer Keys (2025, 2024, 2023, 2022) (35 Question Papers)

❓ Frequently Asked Questions (FAQ) — TN 10th 2nd Mid Term

📌 Important Study Resources on KalviMani:

• TN 10th 2nd Mid Term All Subjects Master Hub — Access all 5 subject question papers and keys.
• Tamil Nadu 2nd Mid Term Master Portal (Classes 6 to 12) — Complete statewide question paper collection.
• Tamil Nadu 10th Standard Textbooks PDF (Tamil & English Medium) — Download official TNSCERT books.
• TN 10th Public Exam Time Table 2027 — Official DGE SSLC board exam dates and guidelines.