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.
CBSE Class 10 board exams twice a year ‘relief’ or ‘burden’? Parents, schools share mixed views
CBSE Class 10 exams twice a year from 2026; 64.4% students in favor, second attempt optional
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