The NCERT questions given at the end of each chapter are not only important for examinations but also helpful to clearly understand all the concepts. That is why students are strongly recommended to ...

Among students, NCERT Books for Class 9 are the most popular option since they offer an in-depth learning experience. With a concentration on brevity, these textbooks deliver material in a way that is ...

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 ...