MCQ - CBSE Class 9 Science Why do not lichens occur in Delhi whereas they commonly grow in Manali or Darjeeling? 10/05/2023 Ajit kumar 82 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why does Mathura refinery pose problems to the Taj Mahal? 10/05/2023 Ajit kumar 91 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why does moon have very cold and very hot temperature variations, e.g., from -190 °C to 110 °C even though it is at the same distance from the sun as the earth is? 10/05/2023 Ajit kumar 84 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why does the percentage of gases like oxygen, nitrogen and carbon dioxide remain almost the same in the atmosphere? 10/05/2023 Ajit kumar 95 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Soil formation is done by both abiotic and biotic factors. List the names of these factors by classifying them as abiotic and biotic. 10/05/2023 Ajit kumar 91 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Following are a few organisms : 10/05/2023 Ajit kumar 151 Views 0 Comments Read more
MCQ - CBSE Class 9 Science In coastal area, wind current moves from the sea towards the land during day; but during night it moves from land to the sea. Discuss the reason. 10/05/2023 Ajit kumar 104 Views 0 Comments Read more
MCQ - CBSE Class 9 Science How can we prevent the loss of topsoil ? 10/05/2023 Ajit kumar 86 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Rivers from land, add minerals to sea water. Discuss how. 10/05/2023 Ajit kumar 72 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Name the various organisms involved in nitrogen cycle. 10/05/2023 Ajit kumar 90 Views 0 Comments Read more