CBSE Class 9 Science Journey Inside the Atom (Class 9 NCERT New) Quiz 8

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CBSE › Class 9 › Science › Journey Inside the Atom (Class 9 NCERT New)

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1. Which of the following answers correctly shows the subatomic particles that are similar in size?

A Electron and Proton B Electron and Neutron C Proton and Neutron D None are similar in size

2. What part of the atom is the arrow pointing to?

A electron B neutron C proton D electron shell

3. What does the atomic number tell us about an atom?

A #of neutrons B #of protons and neutrons C # of electrons and protons D # of protons

4. What does the atomic mass tell us about an atom?

A #of electrons B #of neutrons and electrons C # of protons and neutrons D # of protons and electrons

5. How many neutrons does this element have?

A 30 B 65 C 65.39 D 35

6. How many the electrons does "Al," aluminum, have?

A 5 B 10 C 13 D 3

7. 2. Rutherford discovered what part of the atom

A electron B proton C neutron D nucleus

8. 4. This atomic particle balances the charges from the protons to make the atom neutral

A proton B electron C neutron D nucleus

9. 5.These particles are found in the nucleus

A protons and electrons B protons and neutrons C nucleus and neutrons D electrons and neutrons

10. 6.What scientist is best known for his "Plum Pudding" model of the atom?

A J.J. Tomson B Ernest Rutherford C John Dalton D Democritus

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