MCQ - CBSE Class 9 Science How do substances like CO₂ and water move in and out of the cell? Discuss. 09/29/2023 Ajit kumar 155 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why is the cells called the structural and functional unit of life? 09/29/2023 Ajit kumar 76 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Who discovered cells and how ? 09/29/2023 Ajit kumar 84 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Multiple Choice Questions 09/29/2023 Ajit kumar 73 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What are the postulates of Bohr’s model of an atom ? 09/29/2023 Ajit kumar 61 Views 0 Comments Read more
MCQ - CBSE Class 9 Science What were the drawbacks of Rutherford’s model of an atom? 09/29/2023 Ajit kumar 89 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Enlist the conclusions drawn by Rutherford from his a-ray scattering experiment. 09/29/202309/29/2023 Ajit kumar 87 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Helium atom has 2 electrons in its valence shell but its valency is not 2. Explain. 09/29/2023 Ajit kumar 82 Views 0 Comments Read more
MCQ - CBSE Class 9 Science In what way is the Rutherford’s atomic model different from that of Thomson’s atomic model ? 09/29/2023 Ajit kumar 71 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why do Helium, Neon and Argon have a zero valency ? 09/29/2023 Ajit kumar 99 Views 0 Comments Read more