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 penetration power ofβ-particle is	A. zero B. less thanα-particle C. equal toα-particle D. greater thanα-particle
2	When a nucleus emits an alpha particles, its charge number decreases by	A. 3 B. 2 C. 6 D. 5
3	When a charged particle passes through matter, it produces ionization, this effect is used in	A. fission reaction B. reactor C. radiation detector D. fusion reaction
4	When certain nucleus emits anα particle, its mass number:	A. Increases by one B. Decreases by one C. Remain same D. Decreases by four
5	A mass difference of 0.0012 u is equivalent to and energy of:	A. 0.5 Me V B. 1.13 MeV C. 5.13 MeV D. 1.13 keV
6	Charge on proton is	A. 1.59 x 10^-9C B. 1.59 x 10^-7C C. -1.59 x 10^-19C D. 1.59 x 10^-19C
7	In 1932 Chadwick discovered	A. proton B. neutron C. photon D. electron
8	The range of particle depends upon the factor	A. charge, mass and energy of particle B. density of medium C. ionization potential of the atoms D. all the above
9	Alfa particles are	A. hydrogen nuclei B. helium nuclei C. electrons D. photons
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

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

The chemical behaviour of an atom is determined by

Rutherford performed an experiment on nuclear reactions in:

Alfa particles are

1 amu is equal to.

Which of these is not a radiation detector

The most abundant isotope of neon is

How many isotopes of helium are present?

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

Neutrons are

The emission of radiations take place in elements, having charge number greater than

Charge on proton is

During the nuclear changes, the law/s of conservation that hold/s are that of:

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

Marie curie and Pierre curie discovered:

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

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

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

When certain nucleus emits aβ-particles, is mass number:

The number of all the protons and neutrons in a nucleus is known as

The counter, which also provides the power to the G.M. tube is called:

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Binding energy per nucleus is

Neutron was discovered in

When a charged particle passes through matter, it produces ionization, this effect is used in

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

The half lie of radium-226 is

Mass of proton is

Which of the following material has smaller has life

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

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ECAT Physics Chapter 21 Important MCQ's

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