MCQ - CBSE Class 9 Science What makes the biosphere a stable system? 10/04/2023 Ajit kumar 83 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Explain the formation of soil. What is top soil ? Why is it important ? 10/04/2023 Ajit kumar 62 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Write the composition of soil. On what basis is the type of soil decided ? 10/04/2023 Ajit kumar 92 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Which symbiotic life forms can grow on stones and help in the formation of soil? Write the mode of their action for making soil from rocks. 10/04/2023 Ajit kumar 69 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Name any four carbon containing molecules which are essential to life forms. 10/04/2023 Ajit kumar 63 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Mention the three processes in which oxygen is used up from the atmosphere and the only process in which it is returned to the atmosphere. 10/04/2023 Ajit kumar 64 Views 0 Comments Read more
MCQ - CBSE Class 9 Science State any two harmful effects each of : 10/04/2023 Ajit kumar 115 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What are the different states in which water is found in the water cycle ? 10/04/2023 Ajit kumar 107 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What is nitrogen fixation? Why do plants need to fix nitrogen ? 10/04/2023 Ajit kumar 96 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Differentiate between biodegradable and nonbiodegradable pollutants. 10/04/2023 Ajit kumar 70 Views 0 Comments Read more