Rutherford's model of an atom

Q. Why Rutherford choose a gold foil for his experiment? What would have happened if he choose another metal?

Q. Question 22
Why did Rutherford select a gold foil in his alpha-ray scattering experiment?

Q.

What did Rutherford conclude regarding the atomic mass?
(i) Mass of the atom is uniformly distributed.
(ii) Nucleus of an atom is much heavier than electron.
(iii) Nearly all the mass of an atom resides at the centre of an atom.
(iv) Nucleus of an atom is lighter than the electron.

1. Both (i) and (ii)

2. Both (ii) and (iii)

3. Both (i) and (iv)

4. Both (iii) and (iv)

Q.

What did Rutherford conclude regarding the atomic mass?
(i) Mass of the atom is uniformly distributed.
(ii) Nucleus of an atom is much heavier than electron.
(iii) Nearly all the mass of an atom resides at the centre of an atom.
(iv) Nucleus of an atom is lighter than the electron.

1. Both (i) and (ii)

2. Both (ii) and (iii)

3. Both (iii) and (iv)

4. Both (i) and (iv)

Q. Rutherford put forward the presence of a in the centre of an atom.

1. nucleus
2. plum pudding
3. plasma

Q.

Which of the following point was concluded for an atom after Rutherford's gold foil experiment?

1. Neutral centre

2. Negatively charged centre

3. No positive charge present

4. Positively charged centre

Q. Which of the following metals was used in alpha ray scattering experiment conducted by Rutherford?

1. Gold
2. Silver
3. Sodium
4. Calcium

Q. Atoms have electrons, protons, and neutrons as the fundamental particles. The net electrical charge on an atom is:

1. Positive
2. Negative
3. Neutral
4. Cannot be predicted

Q.

Which among the following is a feature of nuclear model of an atom as proposed by Rutherford?

1. Presence of nucleus and movement of electrons in circular path

2. Mass of the atom is uniformly distributed throughout the atom

3. Size of the atom is equal to size of nucleus

4. Electrons travel in a random path.

Q.

Which of the following are the limitations of Rutherford’s experiment?
(i) Rutherford couldn't explain how many electrons rotate in a particular orbit.
(ii) Rutherford was not able to explain the stability of an atom.
(iii) Rutherford couldn't explain why electrons undergo acceleration and radiate energy.
(iv) Rutherford couldn't explain the presence of nucleus.

1. Only (ii), (iii) and (iv)

2. Only (i), (ii) and (iii)

3. Only (i), (ii) and (iv)

4. (i), (ii), (iii) and (iv)

Q.

Who is known as the father of nuclear physics?

1. Bohr

2. J.J Thomson

3. E.Rutherford

4. Chadwick

Q.

Rutherford’s model was similar to the solar system.

1. True

2. False