Matter in Our Surroundings is the first chapter of NCERT Class IX Science. It explains what matter is made of, the characteristics of particles of matter, the three states of matter and how matter changes from one state to another through melting, boiling, condensation and sublimation. It also covers evaporation, the factors that affect it and how it causes cooling. These free MCQ practice tests help you revise the chapter for school exams and build strong basics for later classes, with instant scoring and a full answer review.