ECAT Pre General Science Chapter 21 online mcq test with answers for Physics chapter 21 (Nuclear Physics)

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ECAT Physics Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	The half life of radioactive substances depends upon	A. amount of substance B. energy of substance C. state of substance D. temperature of substance
2	Alfa particles are	A. hydrogen nuclei B. helium nuclei C. electrons D. photons
3	Proton was discovered by Rutherford in	A. 1915 B. 1906 C. 1910 D. 1920
4	The counter, which also provides the power to the G.M. tube is called:	A. Thin mica window B. thin glass window C. Airy window D. Wooden window
5	When a nucleus emits an alpha particle, it atomic mass decreased by	A. 2 B. 1 C. 4 D. 3
6	The penetration power ofβ-particle is	A. zero B. less thanα-particle C. equal toα-particle D. greater thanα-particle
7	During the nuclear changes, the law/s of conservation that hold/s are that of:	A. Charge B. energy C. Momentum D. Mass
8	Which of the following material has longer half life	A. radium B. polonium C. radium D. uranium
9	How many isotopes of helium are present?	A. 1 B. 2 C. 3 D. 4
10	If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by	A. -4 B. 4 C. 2 D. 1

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ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

ECAT Pre General Science Physics Chapter 21 Nuclear Physics

Referring to the above figure, we can say that of all the elements, the most stable element is

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

A mass difference of 0.0012 u is equivalent to and energy of:

There is present in paraffin a large amount of:

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

In radio-active decay, the original element which disintegrate to another element is called

Neutrons are

When certain nucleus emits anα particle, its mass number:

The range ofβ-particle in air is greater than that ofα-particle by

Neutron was suggested to be in the nucleus by:

The isotope/s of hydrogen is /are:

When a nucleus emits an alpha particles, its charge number decreases by

The chemical behaviour of an atom is determined by

The amount of energy equivalent to 1 a.m.u is

Different radioactive material have

How much time, theα-particle more massive than an electron

Binding energy per nucleus is

Which of the following material has longer half life

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

The nucleus left after the emission of some radiation is called:

When a nucleus emits an alpha particle, it atomic mass decreased by

The half lie of radium-226 is

The most abundant isotope of neon is

Gamma rays consist of steam of

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

γ-rays behave like a particle because they explain the

Neutron was discovered by

Radium was discovered by:

Nuclei that have the same charge number but different mass number are called

A mass spectrograph sort out

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ECAT Physics Chapter 21 Important MCQ's

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