Default Title

Question (11)

QN006722

Most alpha particles passed through the gold foil undeflected because —

(A) Gold is soft
(B) Alpha particles are neutral
(C) Most of the atom is empty space
(D) Nucleus attracts alpha particles strongly

Correct Answer: C

Explanation:

Link:

Report Error

Question (12)

QN006723

A few alpha particles bounced back in Rutherford’s experiment because —

(A) Electrons repelled them
(B) Atom contains a dense positively charged nucleus
(C) Gold foil was thick
(D) Alpha particles lost energy suddenly

Correct Answer: B

Explanation:

Link:

Report Error

Question (13)

QN006724

Rutherford compared electrons revolving around nucleus to —

(A) Bees around hive
(B) Planets around Sun
(C) Stones in water
(D) Clouds in sky

Correct Answer: B

Explanation:

Link:

Report Error

Question (14)

QN006725

If the diameter of an atom is 10^-10 m and a sheet thickness is 10^-4 m, approximately how many atoms are stacked?

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

Correct Answer: C

Explanation:

Divide 10^-4 by 10^-10.

Link:

Report Error

Question (15)

QN006726

Rutherford estimated the nucleus to be nearly how many times smaller than the atom?

(A) 10^2
(B) 10^3
(C) 10^4
(D) 10^5

Correct Answer: D

Explanation:

Link:

Report Error

Question (16)

QN006727

The major limitation of Rutherford’s model was that it could not explain —

(A) Presence of neutrons
(B) Atomic stability
(C) Atomic number
(D) Radioactivity

Correct Answer: B

Explanation:

Link:

Report Error

Question (17)

QN006728

According to Rutherford’s model, an accelerating electron should —

(A) Gain energy continuously
(B) Remain stationary
(C) Lose energy and fall into nucleus
(D) Become positively charged

Correct Answer: C

Explanation:

Link:

Report Error

Question (18)

QN006729

The positively charged particle discovered by Rutherford is —

(A) Electron
(B) Neutron
(C) Proton
(D) Alpha particle

Correct Answer: C

Explanation:

Link:

Report Error

Question (19)

QN006730

A neutral sodium atom contains 11 protons. The number of electrons in it is —

(A) 10
(B) 11
(C) 12
(D) 22

Correct Answer: B

Explanation:

Link:

Report Error

Question (20)

QN006731

Bohr proposed that electrons revolve in fixed paths called —

(A) Clouds
(B) Stationary states
(C) Random zones
(D) Scattering paths

Correct Answer: B

Explanation:

Link:

Report Error

Question (11)

Most alpha particles passed through the gold foil undeflected because —

Explanation:

Link:

Question (12)

A few alpha particles bounced back in Rutherford’s experiment because —

Explanation:

Link:

Question (13)

Rutherford compared electrons revolving around nucleus to —

Explanation:

Link:

Question (14)

If the diameter of an atom is 10^-10 m and a sheet thickness is 10^-4 m, approximately how many atoms are stacked?

Explanation:

Link:

Question (15)

Rutherford estimated the nucleus to be nearly how many times smaller than the atom?

Explanation:

Link:

Question (16)

The major limitation of Rutherford’s model was that it could not explain —

Explanation:

Link:

Question (17)

According to Rutherford’s model, an accelerating electron should —

Explanation:

Link:

Question (18)

The positively charged particle discovered by Rutherford is —

Explanation:

Link:

Question (19)

A neutral sodium atom contains 11 protons. The number of electrons in it is —

Explanation:

Link:

Question (20)

Bohr proposed that electrons revolve in fixed paths called —

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY