MCQ - CBSE Class 9 Science What is nitrogen fixation? Why do plants need to fix nitrogen ? 10/04/2023 Ajit kumar 83 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Differentiate between biodegradable and nonbiodegradable pollutants. 10/04/2023 Ajit kumar 62 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What causes acid rain ? Mention any damage caused by it on living organism. 10/04/2023 Ajit kumar 66 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What is the greenhouse effect ? Name the atmospheric gas, which leads to it and what is impact of it on global climate? 10/04/2023 Ajit kumar 66 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Explain the occurrence of land breeze in coastal areas. 10/04/2023 Ajit kumar 81 Views 0 Comments Read more
MCQ - CBSE Class 9 Science How is carbon dioxide fixed in our atmosphere in two ways ? 10/04/2023 Ajit kumar 65 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Write the names of three processes in which oxygen used and one process by which it returns to the atmosphere. 10/04/2023 Ajit kumar 62 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What makes the biosphere dynamic but stable system? 10/04/2023 Ajit kumar 57 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Name two chemicals present in the living organism having carbon, hydrogen and oxygen as main constituents. State their main function. 10/04/2023 Ajit kumar 71 Views 0 Comments Read more
MCQ - CBSE Class 9 Science List the importance of oxygen gas and ozone gas present in the atmosphere. 10/04/202310/04/2023 Ajit kumar 72 Views 0 Comments Read more