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 amount of energy equivalent to 1 a.m.u is	A. 9.315 Mev B. 93.15 Mev C. 931.5 Mev D. 2.22 Mev
2	Different radioactive material have	A. same half lives B. different half lives C. same mean lives D. same total lives
3	The rate of decay of a radioactive substance	A. decrease exponentially with time B. decreases linearly with time C. increases linearly with time D. increases exponentially with time
4	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
5	A pair of quark and antiquark makes a:	A. Meson B. Baryon C. Proton D. Neutron
6	The penetration power ofβ-particle is	A. zero B. less thanα-particle C. equal toα-particle D. greater thanα-particle
7	Radioactivity is	A. self disruptive activity B. spontaneous activity C. exhibited by all elements under proper conditions D. both 'a' and 'b'
8	The diameter of an atom is of the order	A. 10^-125m B. 10^-11m C. 10^-10m D. 10^-9m
9	Radiation detector are used to	A. measure intensity of radiation B. measure energy of radiation C. difference between different types of radiation D. all the above
10	Heavy water is made of one oxygen atom and two atoms of:	A. Protium B. Deuterium C. Tritium D. Any of these

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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

Binding energy per nucleus is

Examples of moderators used in a fission reactor is/are:

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

Neutron was disvovered by:

Neutrons are

γ-rays are

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

The unit of decay constant is

When certain nucleus emits anα particle, its mass number:

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

1 amu is equal to

A mass spectrograph sort out

There is present in paraffin a large amount of:

Which of these is not a radiation detector

Fraction of the decaying atoms per unit time is called

Neutron was discovered by

How many isotopes of helium are present?

The unit of decay constant is:

Mass of neutron is

The missing mass which is converted to energy in the formation of nucleus, is called

The chemical properties of an element depends upon the number of

Radioactivity was discovered by:

U-238 present in the natural uranium is about:

The figure 1.007276μ shows the mass of an:

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

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

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

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

The rate of decay of radioactive substance

The nuclei of an element having the same charge number but different mass numbers are called:

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ECAT Physics Chapter 21 Important MCQ's

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