Class 9

Force

Question 1 Define the term force? Question 2 Define the term direction of force? Question 3 What are the various effects of force? Question 4 Give an example where a force stops a moving body? Question 5 Give an example where a force changes the shape of a body? Question 6 What do you understand by balanced forces. Give example? Question 7 What do you … [Read more...] about Force

Ionic Compounds

Question 1 What are ionic compound? Question 2 What are covalent compounds? Question 3 Define chemical bond? Question 4 Why noble gases do not react? Question 5 What are ions? Question 6 How ions are formed? Question 7 What are cations. How they are formed? Question 8 Give example of cation formation? Question 9 What are anions? Question 10 How anions … [Read more...] about Ionic Compounds

Graphical Representation of Motion

Question 1 What is the nature of graph for a uniform speed? Question 2 Name the quantity which is measured by the area occupied under the velocity-time graph? Question 3 What does the slope of speed-time graph indicate? Question 4 What can you say about the motion of a body if its displacement-time graph is a straight line? Question 5 What can you say about the … [Read more...] about Graphical Representation of Motion

Motion

Question 1 Define motion? Question 2 Define distance? Question 3 Define displacement? Question 4 What is a scalar quantity? Question 5 What is a vector quantity? Question 6 Define uniform motion? Question 7 Define non-uniform motion? Question 8 A body is moving along a circular path of radius R.What will be the distance travelled and displacement of the … [Read more...] about Motion

Atoms and Molecules

Question 1 Which Indian philosopher suggested that all matter is composed of ver small particles. What name was given by him to these particles? Question 2 What is law of conservation of mass? Give example? Question 3 What is meant by law of constant proportion? Give example? Question 4 Name the scientist who gave law of conservation of mass? Question 5 Name the … [Read more...] about Atoms and Molecules