Question 1 What is diffusion ? Question 2 Give few examples of diffusion ? Question 3 Explain why, when a bottle of perfume is opened in a room, we can smell it even from a considerable distance ? Question 4 Name the process by which a drop of ink spreads in a beaker of water ? Question 5 Out of solid ,liquid and gases which has highest rate of diffusion … [Read more...] about Diffusion
Class 9
Sublimation
Question 1 What is sublimation. Question 2 Define sublimate. Question 3 Define sublime. Question 4 Give few examples of substances that undergoes sublimation ? Question 5 Why naphthalene balls kept in stored clothes in our homes disappear over a period of time ? Question 6 How does applying pressure help in the liquefaction of a gas ? Question 7 What is the … [Read more...] about Sublimation
Latent Heat
Latent heat | Matter in our Surroundings | Class 9 Question 1 What is latent heat ? Question 2 Define the term Latent heat of fusion of a solid ? Question 3 Define the term latent heat of Vaporisation of a liquid? question 4 Why does the temperature remain constant during the melting of ice even though heat is supplied continuously ? Question 5 Why does the … [Read more...] about Latent Heat