Structure of Atom Test

Result

Structure of Atom Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Statement-1 : It is not possible to find an electron present in the nucleus.

Statement-2 : Velocity of electron-wave is less as compared to velocity of light.

A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanations of Statement-1.

B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

C
Statement-1 is true but Statement-2 is false.

D
Statement-1 is false but Statement-2 is true.

Solution

Both assertion and reason are correct. Reason is not the correct explanation of assertion.
Question 2
1 / -0

Choose incorrect amongst the following statements about cathode rays.

A
They are deflected by electric and magnetic fields

B
Particles forming them possess the same mass and same charge.

C
e ⁄ m ratio of the particles forming them depends upon the gas filled in the discharge tube

D
e ⁄ m ratio is constant, independent of the gas filled and cathode material

Solution

e ⁄ m ratio is constant, independent of the gas filled and cathode material
Question 3
1 / -0

Statement-1 : Electromagnetic waves consist of oscillating electric and magnetic fields..

Statement-2 : Matter waves are radiated into the space.

A
Both Statement-1 and Statement-2 are true and Statement-2 is the correct explanations of Statement-1.

B
Both Statement-1 and Statement-2 are true and Statement-2 is not the correct explanation of Statement-1.

C
Statement-1 is true but Statement-2 is false.

D
Statement-1 is false but Statement-2 is true.

Solution

Electromagnetic waves consist of oscillating electric and magnetic fields and radiate into the space. De Broglie or matter waves are always associated with the matter particles (electrons) and do not radiate in space.
Question 4
1 / -0

What is an electron ?

A
Neither

B
Either, depending on how it is observed

C
A wave

D
A particle

Solution

An electron behaves as both particle and wave.
Question 5
1 / -0

The energy of the electron in Be3⁺ ion depends on

A
The principal, azimuthal, magnetic and spin quantum numbers

B
The principal and azimuthal quantum number only

C
The principal quantum number only

D
The principal, azimuthal and magnetic quantum number only

Solution

Be³⁺ is hydrogenic ion, i.e., consists of one extra-nuclear electron.