CBSE Class 9 Science Syllabus 2023-24: In class 9, students are introduced to three major divisions of Science which are Physics, Chemistry and Biology. At this level, the Science curriculum is vast ...
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 ...
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