MCQ - CBSE Class 9 Science Who discovered cells and how ? 09/29/2023 Ajit kumar 90 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Multiple Choice Questions 09/29/2023 Ajit kumar 81 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 64 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 94 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 91 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 87 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 74 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 104 Views 0 Comments Read more
MCQ - CBSE Class 9 Science In response to a question, a student stated that in an atom, the number of protons is greater than the number of neutrons, which in turn is greater than the number of electrons. Do you agree with the statement ? Justify your answer. 09/29/2023 Ajit kumar 83 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Is it possible for the atom of an element to have one electron, one proton and no neutron. If so, name the element. 09/29/2023 Ajit kumar 89 Views 0 Comments Read more