Question # 1

Neon gas have three isotopes whose atomic numbers are

Choose an answer

20, 24 , 23

20, 21 , 22

20, 19 , 21

none of these

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Choose an answer

Nitrogen

Hydrogen

Lead

Oxygen

Krypton

The chemical behaviour of an atom is determined by

Choose an answer

binding energy

atomic number

mass number

number of isotopes

Neutrons are

Choose an answer

positive charge

negatively charged

massless

neutral

Rutherford performed an experiment on nuclear reactions in:

Choose an answer

1718 A.D

1818 A.D

1918 A.D

2001 A.D.

1701 A.D.

1 amu is equal to

Choose an answer

1.66 x 10^-24kg

1.66 x 10^-19kg

1.66 x 10^-34kg

1.66 x 10^-27kg

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Choose an answer

Protactinium

Actinium

Uranium

Radium

Redon

Nucleon means:

Choose an answer

Only electrons

Only neutrons

Only protons

Both (A ) and (C)

Both (B) and (C)

Radioactivity

Choose an answer

is exhibited more by semiconductors in general

in exhibited more by the element when they are coupled

with other radioactive elements by a covalent bond

is an atomic property of radioactive elements

The nucleus/nuclei of hydrogen is/are:

Choose an answer

Proton

Deuteron

Triton

All of these

None of these

A mass spectrograph sort out

Choose an answer

molecules

atoms

elements

isotopes

The energy acquired by a mass of 1g moving with the speed of light is

Choose an answer

3 x 10⁸J

9 x 10¹³J

3 x 10¹³J

9 x 10¹⁶J

Radioactivity was discovered by:

Choose an answer

Becquerel

Marie curie

Pierre curie

All of them

None of these

According to Rutherford atomic model, the positive charge in an atom

Choose an answer

is concentrated at its centre

is in the form of positive electron at same distance from its centre

is spread uniformly through its volume

none of these

The diameter of an atom is of the order

Choose an answer

10^-125m

10^-11m

10^-10m

10^-9m

More Classes

Other Links

ECAT Physics Chapter 21 Nuclear Physics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer