MCQ - CBSE Class 9 Science List two forces which act as on a body when it is immersed in a liquid. State the condition for a body to float or sink in a liquid. Why does an iron nail sink and a piece of wood floats when placed on the surface of water ? 10/03/2023 Ajit kumar 50 Views 0 Comments Read more
MCQ - CBSE Class 9 Science State the principle on which the working of a hydrometer is based. 10/03/2023 Ajit kumar 76 Views 0 Comments Read more
MCQ - CBSE Class 9 Science The wheels of an army tank rest on a steel belt. Give reason. 10/03/2023 Ajit kumar 67 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Lead has greater density than iron and both are denser than water. Is the buoyant force on a lead object greater than, or lesser than or equal to the buoyant force on an iron object of the same volume ? Explain your answer giving reason. 10/03/2023 Ajit kumar 73 Views 0 Comments Read more
MCQ - CBSE Class 9 Science A floating boat displaces water weighing 6000 N. 10/03/2023 Ajit kumar 60 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why does a block of wood held underwater rise to the surface when released? 10/03/2023 Ajit kumar 77 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Explain why a truck or a motor bus has much wider tyres ? 10/03/2023 Ajit kumar 71 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What is Relative Density? The relative density substance is greater than one, what does it signify? 10/03/2023 Ajit kumar 75 Views 0 Comments Read more
MCQ - CBSE Class 9 Science A steel needle sinks in water but a steel ship floats. Explain how. 10/03/2023 Ajit kumar 63 Views 0 Comments Read more
MCQ - CBSE Class 9 Science If two equal weights of unequal volumes are balanced in air, what will happen when these are completely dipped in water ? 10/03/2023 Ajit kumar 57 Views 0 Comments Read more