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Question (41)

QN006802

Rutherford received the Nobel Prize in Chemistry for his work on —

(A) Electrons
(B) Atomic structure
(C) Radioactive breakdown of elements
(D) X-rays

Correct Answer: C

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Question (42)

QN006803

Niels Bohr received the Nobel Prize in —

(A) 1906
(B) 1908
(C) 1913
(D) 1922

Correct Answer: D

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Question (43)

QN006804

If the gold foil used in Rutherford’s experiment were made thicker, the number of alpha particles deflected at large angles would —

(A) Decrease
(B) Become zero
(C) Increase
(D) Remain exactly same

Correct Answer: C

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Question (44)

QN006805

Which observation directly disproved Thomson’s plum pudding model?

(A) Most alpha particles passed straight
(B) Cathode rays moved to anode
(C) A few alpha particles bounced back
(D) Electrons are negatively charged

Correct Answer: C

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Question (45)

QN006806

In Rutherford’s experiment, scattering refers to —

(A) Heating of foil
(B) Splitting of nucleus
(C) Deflection from straight path
(D) Change in colour of gold

Correct Answer: C

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Question (46)

QN006807

If negatively charged particles were used instead of alpha particles in Rutherford’s experiment, they would be strongly attracted towards the —

(A) Electrons
(B) Gold foil surface
(C) Positively charged nucleus
(D) Vacuum pump

Correct Answer: C

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Question (47)

QN006808

Which atomic model first attempted to explain the balance of positive and negative charges in an atom?

(A) Dalton’s model
(B) Thomson’s model
(C) Rutherford’s model
(D) Bohr’s model

Correct Answer: B

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Question (48)

QN006809

According to Rutherford, most of the mass of an atom is concentrated in the —

(A) Electrons
(B) Empty space
(C) Nucleus
(D) Outer shell

Correct Answer: C

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Question (49)

QN006810

Which scientist guided James Chadwick during his research career?

(A) Bohr
(B) Dalton
(C) Rutherford
(D) Democritus

Correct Answer: C

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Question (50)

QN006811

The development of atomic models shows that science progresses through —

(A) Guesswork only
(B) Memorisation
(C) Curiosity, questioning and experimentation
(D) Repetition without evidence

Correct Answer: C

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Question (41)

Rutherford received the Nobel Prize in Chemistry for his work on —

Explanation:

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Question (42)

Niels Bohr received the Nobel Prize in —

Explanation:

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Question (43)

If the gold foil used in Rutherford’s experiment were made thicker, the number of alpha particles deflected at large angles would —

Explanation:

Link:

Question (44)

Which observation directly disproved Thomson’s plum pudding model?

Explanation:

Link:

Question (45)

In Rutherford’s experiment, scattering refers to —

Explanation:

Link:

Question (46)

If negatively charged particles were used instead of alpha particles in Rutherford’s experiment, they would be strongly attracted towards the —

Explanation:

Link:

Question (47)

Which atomic model first attempted to explain the balance of positive and negative charges in an atom?

Explanation:

Link:

Question (48)

According to Rutherford, most of the mass of an atom is concentrated in the —

Explanation:

Link:

Question (49)

Which scientist guided James Chadwick during his research career?

Explanation:

Link:

Question (50)

The development of atomic models shows that science progresses through —

Explanation:

Link:

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