Rutherford's Alpha Scattering Experiment

Q. The ratio of mass of electron to mass of hydrogen atom

Q.

In Rutherford's scattering experiment, which of the following does not happen?

1. Most of the $\alpha$-rays pass through without deflection.

2. A few $\alpha$-particles pass through the nucleus.

3. A few $\alpha$-particles are deflected back.

4. $\alpha$-Particles going near the nucleus are slightly deflected.

Q.

In Rutherford’s experiment, generally the thin foil of heavy atoms, like gold, platinum etc. have been used to be bombarded by the α-particles. If the thin foil of light atoms like aluminium etc. is used, what difference would be observed from the above results?

Q. Why was a gold foil used in alpha particle scattering experiment?

1. Gold is the most malleable metal
2. Gold is a good conductor of electricity
3. Gold is a very ductile metal
4. None of the above

Q.

State two conclusions from Rutherfords scattering of alpha particles with gold foil.

Q. Atom is made up of electron, proton, and neutron. Then electron, proton, and neutron are made up of?

Q. When alpha particles are bombarded on thin gold foil, most of them go straight through the foil because:

1. Alpha particles are much lighter than electrons
2. Alpha particles are positively charged
3. Most of the atom is empty space
4. Alpha particles moves with high velocity

Q. Which statement about cathode rays is correct?

1. They travel in straight line towards cathode
2. They produce fluorescent discharge through the walls of the tube
3. They produce heating effect
4. They can affect photographic plate

Q. Rutherford's experiment on scattering of alpha particles showed for the first time that the atom has

1. Electrons
2. Protons
3. Nucleus
4. Neutrons

Q. Rutherford's scattering experiment lead to the conclusion that:

1. Most of the space in atom is empty
2. The centre of the atom has a positively charged nucleus
3. Electrons revolve around the nucleus like planets around the sun.
   
4. All of the above

Q. ntA certain diatomic molecule, AB has dipole moment 1.6 D and the internuclear distance is 100 pm. The percentage of electronic charge existing on more electronegative atom isn ntn

Q. Rutherford’s model of atom resembles the solar system in which the nucleus plays the role of sun and the electrons that of revolving planets but it could not explain the stability of atom because

1. Gravitational force is weeker than electrostatic force
2. Gravitational force is stronger than electrostatic force
3. The palnets revolving around the sun carries net charge
4. Electrons revolving around nucleus carries net charge

Q. According to Rutherford's model, the positive charge is concentrated in a very small volume.

1. False
2. True

Q.

From the $\alpha$-particle scattering experiment, Rutherford concluded that

1. $\alpha$-particles can come within a distance of the of ${10}^{-15}m$ of the nucleus.

2. The radius of the nucleus is less that ${10}^{-15}m$.

3. The scattering follows Coulomb's law.

4. The positively charged parts of the atom move with extremely high velocities.

Q. Which of the following statements about Rutherford's model of an atom is not correct?

1. Most of the atom's mass is concentrated in an extremely small region called nucleus
2. Electrons move around the nucleus in orbits
3. Electrons and nucleus are held together by electrostatic forces of attraction
4. The model explained the stability of an atom

Q. During Rutherford's experiment, generally, the thin foil of heavy atoms like gold was used and bombarded by the $\alpha$-particles. If the thin foil of light atoms like aluminium etc. is used, what difference would have been observed?

Q. When $\alpha$-particles are passed through a thin metal foil, most of them go straight through the foil because:

1. $\alpha$-particles are much heavier than electrons
2. $\alpha$-particles are positively charged
3. most of the atom is empty
4. $\alpha$-particles move with a high velocity

Q. Rutherford’s model of atom resembles the solar system in which the nucleus plays the role of sun and the electrons that of revolving planets but it could not explain the stability of atom because

1. Gravitational force is weeker than electrostatic force
2. Gravitational force is stronger than electrostatic force
3. The palnets revolving around the sun carries net charge
4. Electrons revolving around nucleus carries net charge

Q. When alpha particles are bombarded on thin gold foil, most of them go straight through the foil because:

1. Alpha particles are much lighter than electrons
2. Alpha particles are positively charged
3. Most of the atom is empty space
4. Alpha particles moves with high velocity

Q. Rutherford's experiment, which established the nuclear model of the atom, used a beam of

1. $\beta -$ particles, which impinged on a metal foil and got absorbed
2. $\gamma -$ rays, which impinged on a metal foil and got scattered
3. Helium atoms, which impinged on a metal foil and got scattered
4. Helium nuclei, which impiniged on a metal foil and got scattered

Q. Rutherford's scattering experiment is related to the size of the:

1. Nucleus
2. Atom
3. Electron
4. Neutron

Q. The correct statements among the following is

1. Thomson was not aware of the knowledge of the protons and neutrons when he proposed plum pudding model
2. The mass of the atom is uniformly distributed throughout the atom according to plum pudding model
3. Rutherford was not aware of the knowledge of protons and neutrons when he proposed his model of atom
4. The mass of the atom is not uniformly distributed throughout the atom according to Rutherford model

Q. When $\alpha$-particles are passed through a thin metal foil, most of them go straight through the foil because:

1. $\alpha$-particles are much heavier than electrons
2. $\alpha$-particles are positively charged
3. most of the atom is empty
4. $\alpha$-particles move with a high velocity