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Q. No.Which of the following conclusions could not be derived from Rutherford's -particle scattering experiment?
| 1. | Most of the space in the atom is empty. |
| 2. | The radius of the atom is about 10-10 m while that of a nucleus is 10–15 m. |
| 3. | Electrons move in circular path of fixed energy called orbits. |
| 4. | Electrons and the nucleus are held together by electrostatic forces of attraction. |
Subtopic: Introduction of Atomic Structure |
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Which of the following statement is not correct about the characteristics of cathode rays?
| 1. | They start from the cathode and move towards the anode |
| 2. | They travel in straight line in the absence of an external electrical or magnetic field |
| 3. | Characteristics of cathode rays do not depend upon the material of electrodes in cathode ray tube |
| 4. | Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube |
Subtopic: Introduction of Atomic Structure |
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Correct statement about the properties of the atom explained by the Thomson
model of an atom is:
| 1. | Overall neutrality of atom |
| 2. | Spectra of a hydrogen atom |
| 3. | Position of electrons, protons, and neutrons in an atom |
| 4. | Stability of atom |
Subtopic: Introduction of Atomic Structure |
69%
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Q. No.
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