Structure of the Atoms Test

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Structure of the Atoms Test - 18

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Weekly Quiz Competition

Question 1
1 / -0

Bohr proposed his atomic model based on :

A
oil drop experiment

B
planck's quantum theory

C
$$\alpha$$-ray scattering experiment

D
experiments on conduction of gases

Solution

Bohr proposed his atomic model based on planck's quantum theory.
Question 2
1 / -0

Thomson proposed the model of an atom similar to :

A
christmas tree

B
christmas pudding

C
chocolate

D
none of the above

Solution

Thomson proposed the model of an atom be similar to that of a Christmas pudding. The electrons in a sphere of positive charge were like currants (dry fruits) in a spherical Christmas pudding.
Question 3
1 / -0

The ratio of energy to frequency of a radiation emitted by an electron is equal to :

A
wave length

B
velocity of electron

C
bohr's radius

D
planck's constant

Solution

The ratio of energy to frequency of a radiation emitted by an electron is equal to Planck's constant.
Question 4
1 / -0

Who was the first scientist to propose a model for the structure of an atom?

A
J.J. Thomson

B
Dalton

C
Ernest Rutherford

D
E. Goldstein

Solution

J.J. Thomson was the first one to propose a model for the structure of an atom.
Question 5
1 / -0

Ernest Rutherford carried out his work on discovery of nucleus with:

A
silver foil experiment

B
gold foil experiment

C
$$\displaystyle \beta -$$ particle experiment

D
None of the above

Solution

Ernest Rutherford carried out his work on the discovery of nucleus of an atom with gold foil experiment.
Rutherford designed an experiment for this. In this experiment, fast-moving $$\alpha $$-particles were made to fall on a thin gold foil.
Hence, option $$B$$ is correct.
Question 6
1 / -0

Who is known as the father of nuclear physics?

A
Ernest Rutherford

B
Dalton

C
J.J. Thomson

D
E. Goldstein

Solution

Ernest Rutherford is known as the father of nuclear physics. He is famous for his work on radioactivity and the gold foil experiment that suggested the existence of a nucleus in an atom.
Question 7
1 / -0

Rutherford's atomic model couldn't explain :

A
the presence of electrons in the atom

B
the presence of positive charge in the atom

C
the stability of the atom

D
the position of the nucleus

Solution

Rutherford's atomic model couldn't explain the stability of atom but it explained the position of nucleus, presence of positive charge in atom and position of electrons.
Question 8
1 / -0

Which of the following was carried out by Rutherford in his experiment?

A
Fast moving alpha-particles were made to fall on a thin silver foil.

B
Fast moving beta-particles were made to fall on a thin gold foil.

C
Fast moving alpha-particles were made to fall on a thin gold foil.

D
Fast moving gamma-particles were made to fall on a thin gold foil.

Solution

Ernest Rutherford performed an experiment to understand the structure of atom. In this experiment, fast-moving alpha particles were made to fall on a thin gold foil (100 nm thickness).
Question 9
1 / -0

Who suggested the distribution of electrons into different orbits of an atom?

A
E. Goldstein

B
Ernest Rutherford

C
Bohr and Bury

D
Dalton

Solution

The arrangement and distribution of electrons in different orbits were given by Bohr and Bury. The arrangement of electrons in different shells and sub-shells is known as the electronic configuration of a particular element.
Question 10
1 / -0

The combining capacity of an element is called:

A
valency

B
valence electron

C
Both A and B

D
None of the above

Solution

Valency of an element gives the combining power of an element. It determines the number of atoms with which an atom of the element can combine.
For example, the combining capacity or valency of sodium is 1. So, if sodium has to form compounds, it will generally combine with one other atom.

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Re-Attempt Weekly Quiz Competition

Structure of the Atoms Test - 18

Result

Structure of the Atoms Test - 18

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SHARING IS CARING

Question 1

oil drop experiment

planck's quantum theory

$$\alpha$$-ray scattering experiment

experiments on conduction of gases

Solution

Question 2

christmas tree

christmas pudding

chocolate

none of the above

Solution

Question 3

wave length

velocity of electron

bohr's radius

planck's constant

Solution

Question 4

J.J. Thomson

Dalton

Ernest Rutherford

E. Goldstein

Solution

Question 5

silver foil experiment

gold foil experiment

$$\displaystyle \beta -$$ particle experiment

None of the above

Solution

Question 6

Ernest Rutherford

Dalton

J.J. Thomson

E. Goldstein

Solution

Question 7

the presence of electrons in the atom

the presence of positive charge in the atom

the stability of the atom

the position of the nucleus

Solution

Question 8

Fast moving alpha-particles were made to fall on a thin silver foil.

Fast moving beta-particles were made to fall on a thin gold foil.

Fast moving alpha-particles were made to fall on a thin gold foil.

Fast moving gamma-particles were made to fall on a thin gold foil.

Solution

Question 9

E. Goldstein

Ernest Rutherford

Bohr and Bury

Dalton

Solution

Question 10

valency

valence electron

Both A and B

None of the above

Solution

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