Question # 1

Which of the following represents electronic configuration of the most electropositive elements

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He [ 2s^-1]

Xe [6s¹]

He [2s²]

Xe [6s²]

Which electron traveled more distance, when jump from

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n1 to n2

n2 ato n3

n3 to n2

n3 to n4

If uncertainty position of an electron is zero, the uncertainty in its momentum would be

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Zero

Infinite

Both a and b

None of these

Positive rays were discovered by.

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J.J.Thomson

Goldstein

Ruther ford

William Crookes

Quantum number values for 3p orbitals are.

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n = 0, l = 3

n = 3 , l = 1

n = 2, l = 1

n = 2 , l = 3

Maximum number of electrons in f-subshell is.

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2

6

10

14

Which one of the following has the same number of electrons as an alpha particle.

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H

He

H+

Li+

When atoms are subjected to strong electric field, splitting of spectral lines is called.

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Zeeman effect

stark effect

Photoelectric effect

Compton effect

Which one of the following orbital will be filled first.

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4f

5d

3d

4s

In the ground state of an atom the electron is present.

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In the nuclsus

In the second shell

Nearest to the nucleus

Farthest from the nucleus

Splitting of spectral lines when atoms are subjected to strong electric field is called

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Zeeman effect

Stark effect

Photoelectric effect

Compton effect

Lyman series lie in

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Ultraviolet region

Visible region

Infrared region

Radio waves region

In discharge tube, properties of X-rays depend upon the nature of.

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Residual gas

Cathode plate

Anode plate

All of these

n+1 value of 6d orbital is.

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08

09

10

18

In the ground state of an atom, the electrons is present.

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In the nucleus

In the second shell

Nearest to the nucleus

Farthest form the nucleus

The wave number of the light emitted by a certain source is 2 x 10⁶ m-1 . The wavelength of this light will be.

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500 nm

5000 nm

200 nm

5 x10⁷ m

In the ground state of an atom, the electron is present

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In the nucleus

In the second shell

Nearest to the nucleus

Farthest from the nucleus

An orbital which is spherical and symmetrical is

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S-Orbital

P - Orbital

d- Orbital

f - Orbital

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