UHA Chemistry Notes 9th Class
UHA Chemistry Notes 9th Class Chapter-1 Important short Question: 1. What is chemistry ? Ans: The branch of science which deals with the composition, structure, properties and reactions of matter is called chemistry. 2. What role is played by chemistry in our daily life ? Ans: The development of science and technology has provide us a lot of facilities in daily life . Imagine the role and importance of petrochemical products , medicines and drugs , soap , detergent , soap , plastic , paint , pigments , insecticides , pesticides , which all are fruit of the efforts of chemists. 3. What is physical chemistry also give two example about physical chemistry ? Ans: Physical Chemistry is defined as the branch of chemistry that deals with the relationship between the composition and properties of matter along with the changes in them. For example th...
Comments
Post a Comment