Q 1. What is meant by a substance?
Substance- A substance is a matter which consists of a single type of particles and has specific properties.
For examples tin, sulphur, pure sugar (sucrose) etc.
Board Exams 2026: NCERT PARAKH forms expert committee to standardise Class 10, 12 certificates
CBSE Class 10 board exams 2026 from February 17, May 15; tentative date sheet out for both phases
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