Class 9 Science — Chapter 2: Is Matter Around Us Pure?
90 practice questions · 30 Easy · 30 Medium · 30 Hard
Free NCERT-aligned multiple-choice practice for Class 9 Science, Chapter 2 (Is Matter Around Us Pure?). Practise timed Easy, Medium and Hard quizzes with instant explanations — built for CBSE Board exams, JEE Main and NEET UG. Here are a few sample questions; sign in free to practise all 90.
Sample questions
A homogeneous mixture is also called a:
Homogeneous mixture has uniform composition — that's a solution.
A solution containing 10 g salt in 90 g water has mass percentage of salt:
Mass % = (10 / (10+90)) × 100 = 10%.
The Tyndall effect (scattering of light) is observed in:
Colloid particles are large enough to scatter light — Tyndall effect.
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