Explanation: A pure substance is one which is made up of only one kind of atoms or molecules. They have the same composition throughout. 2.Rusting of an article made up of iron is called (a) corrosion ...

Class 9 Science NCERT Exemplar Solutions for Chapter 1 - Matter in Our Surroundings include the simplest answers and explanations to all the questions. All the class 9 students would find these ...

To help Class 9 students score high marks in the Annual Exam 2026, we have compiled complete CBSE Class 9 Study Material 2025 ...