MCQ - CBSE Class 9 Science Why did Rutherford choose gold and not any other lighter element (such as aluminium) for his experiment? Explain your answer giving two reasons. 09/29/2023 Ajit kumar 53 Views 0 Comments Read more
MCQ - CBSE Class 9 Science (a) Write two drawbacks of Rutherford’s model of an atom. (b) State Bohr’s postulates to overcome the drawbacks of Rutherford’s model. 09/29/2023 Ajit kumar 83 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why atomic number is considered as better fundamental attribute of an element ? State the reason. 09/29/2023 Ajit kumar 59 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Find out the valency of an element ‘X’ having atomic number 16. 09/29/2023 Ajit kumar 69 Views 0 Comments Read more
MCQ - CBSE Class 9 Science (a) What are isobars ? (b) Atomic number of an element Y is 17. 09/29/2023 Ajit kumar 63 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Give reasons for the following: 09/29/2023 Ajit kumar 77 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Explain why did Rutherford select a gold foil in his alpha scattering experiments ? 09/29/2023 Ajit kumar 83 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Name the three subatomic particles of an atom. 09/29/2023 Ajit kumar 59 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Rutherford designed an experiment to determine the structure of an atom. Answer the following in relation to this experiment: 09/29/2023 Ajit kumar 63 Views 0 Comments Read more