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 ...
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 ...
NCERT Class 9 Science Book PDF: The National Council of Educational Research and Training (NCERT) has revised the Class 9 Science NCERT Book with the deletion of certain chapters and topics to reduce ...
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