Important Question of Chapter -1 of 9th Class By Mani ma'am

   Important Question of Chapter -1 of 9th Class

1. Define latent heat of Vaporization. 
2. How the three states of matter are related to each other? 
3.Why is rubber solid?
4.Why are we using cotton clothes in summer? 
5.Explain factor affecting evaporation. 
6.How is desity related to area? 
7.What is relation between kelvin and celsius. 
8. How can you measure the room temperature? 
9. Which have more energy water and water vapour? 
10.Define diffusion.