Class 8 CBSE Science — Important MCQs with Answers

Practise Class 8 Science chapter by chapter, all in one place. Every question follows the latest NCERT syllabus and the chapters your school teaches, in the same order. Class 8 follows the NCF-2023 NCERT book “Curiosity” (new from 2025-26), and every chapter here is mapped to it. There are 195 timed quizzes made from 1,872 practice questions across 26 chapters. Easy builds confidence, Medium makes it stick, and Hard stretches you toward rock-solid basics.

To score well in Class 8 Science, focus on clear concepts in physics, chemistry and biology basics. Each chapter on XamBaaz has timed Easy, Medium and Hard quizzes, several of each and never the same set twice. Marking is exam-style: +4 for a right answer, −1 for a wrong one, 0 for a skip. Every question has a one-line explanation, so you learn why an answer is right, not just which option.

Start with any chapter. Popular picks include Exploring the Investigative World of Science, The Invisible Living World: Beyond Our Naked Eye, Health: The Ultimate Treasure, right through to Our Home: Earth, a Unique Life-Sustaining Planet. Go chapter by chapter and watch your accuracy rise. Attempt every chapter and the Class 8 Science Subject Mastery Test unlocks — a 30-question, 60-minute mock on the whole syllabus, set like a board paper.

Practice is free to try, with no credit card and no app to install. Sign in with Google and your progress, streaks and XP save on every device. Revise Class 8 Science on your phone between classes and pick up where you left off.

Each chapter opens with free Key Concepts revision notes — a quick overview, the core concepts defined and key formulas — so you can revise Class 8 Science before you practise. Open any chapter below to read its notes and try sample questions.