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Question (11)

QN006772

Alpha particles used in Rutherford’s experiment are —

(A) Negatively charged
(B) Neutral
(C) Positively charged
(D) Uncharged atoms

Correct Answer: C

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Question (12)

QN006773

The gold foil experiment is also called —

(A) Cathode ray experiment
(B) Alpha-ray scattering experiment
(C) Electron diffraction experiment
(D) Proton emission experiment

Correct Answer: B

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Question (13)

QN006774

Most alpha particles passed through the gold foil without deflection because —

(A) Gold atoms are soft
(B) Atoms contain large empty space
(C) Alpha particles are very light
(D) Nucleus attracts them

Correct Answer: B

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Question (14)

QN006775

A few alpha particles were sharply deflected in Rutherford’s experiment because —

(A) Electrons absorbed them
(B) Positive charge is concentrated in nucleus
(C) Gold foil melted
(D) Alpha particles became neutral

Correct Answer: B

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Question (15)

QN006776

Rutherford proposed that electrons revolve around the nucleus like —

(A) Fish in water
(B) Planets around the Sun
(C) Birds around nest
(D) Clouds around mountain

Correct Answer: B

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Question (16)

QN006777

Rutherford’s model is also known as the —

(A) Plum pudding model
(B) Planetary model
(C) Wave model
(D) Orbital model

Correct Answer: B

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Question (17)

QN006778

The approximate diameter of an atom according to Rutherford is —

(A) 10^-5 m
(B) 10^-8 m
(C) 10^-10 m
(D) 10^-15 m

Correct Answer: C

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Question (18)

QN006779

The approximate diameter of a nucleus is —

(A) 10^-5 m
(B) 10^-10 m
(C) 10^-12 m
(D) 10^-15 m

Correct Answer: D

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Question (19)

QN006780

If an atom were the size of a cricket ground, Rutherford compared the nucleus to a —

(A) Football
(B) Grain of sand
(C) Black pepper grain
(D) Marble

Correct Answer: C

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Question (20)

QN006781

A sheet has thickness 10^-4 m. If one atom has diameter 10^-10 m, the number of atoms stacked is approximately —

(A) 10^2
(B) 10^4
(C) 10^6
(D) 10^8

Correct Answer: C

Explanation:

Divide 10^-4 by 10^-10.

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Question (11)

Alpha particles used in Rutherford’s experiment are —

Explanation:

Link:

Question (12)

The gold foil experiment is also called —

Explanation:

Link:

Question (13)

Most alpha particles passed through the gold foil without deflection because —

Explanation:

Link:

Question (14)

A few alpha particles were sharply deflected in Rutherford’s experiment because —

Explanation:

Link:

Question (15)

Rutherford proposed that electrons revolve around the nucleus like —

Explanation:

Link:

Question (16)

Rutherford’s model is also known as the —

Explanation:

Link:

Question (17)

The approximate diameter of an atom according to Rutherford is —

Explanation:

Link:

Question (18)

The approximate diameter of a nucleus is —

Explanation:

Link:

Question (19)

If an atom were the size of a cricket ground, Rutherford compared the nucleus to a —

Explanation:

Link:

Question (20)

A sheet has thickness 10^-4 m. If one atom has diameter 10^-10 m, the number of atoms stacked is approximately —

Explanation:

Link:

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