Question # 1

The concept of orbit was used by:

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J.J Thomson

Rutherford

Bohr

Planck

In 9th century scientist accepted by:

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Dalton

Bohars

Rutherford

Nil

Which one of the following shell consists of three subshells?

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K- shell

M-Shell

L-shell

M-shell

In ________________ Rutherford's was studying radiations.

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1911

1931

1921

1922

The boiling point of H2O is:

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100

12

1.105

9

Cathode rays are actually

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Electrons

Protons

Neutrons

Photons

The value of Planck's constant is

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6.63 x 10-34 Js

6.63 x 10-32 Js

6.63 x 10-30 Js

6.63 x 10-28 Js

Canal rays are actually

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Electrons

Protons

Neutrons

X-rays

First energy level is denoted by:

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K

L

M

N

In isotopes numbers of ________________ is same.

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Protons

Electrons

Neutrons

Mass number

The number of isotopes of carbon are

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1

2

3

5

Which of the following can accommodate 18 electrons?

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K

L

M

N

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