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	Gamma rays consist of steam of	A. electron B. proton C. photons D. all of these
2	Neutron was discovered by	A. Curie B. Roentgen C. Chadwick D. Rutherford
3	The rate of decay of radioactive substance	A. is constant B. decrease exponentially with time C. varies inversely as time D. decreases linearly with time
4	Different radioactive material have	A. same half lives B. different half lives C. same mean lives D. same total lives
5	When a nucleus emits an alpha particle, it atomic mass decreased by	A. 2 B. 1 C. 4 D. 3
6	Mass of proton is	A. 1.67 x 10^-27kg B. 1.67 x 10^-31kg C. 1.66 x 10^-34kg D. 1.67 x 10^-17kg
7	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
8	The time required for a radioactive material to decrease in active by one half is called	A. half time B. half life C. disintegration time D. mean life
9	Curie is a unit of	A. reluctance B. resistivity C. binding energy D. radioactivity
10	Fraction of the decaying atoms per unit time is called	A. decay atom B. decay element C. decay constant D. decay

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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

Pair production take place when energy ofγ-rays photon is

Binding energy per nucleus is

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

Gamma rays consist of steam of

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

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

The total charge of any nucleus is given as

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

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

Mass of proton is

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

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

The isotope/s of hydrogen is /are:

Neon gas have three isotopes whose atomic numbers are

The most abundant isotope of neon is

The penetration power ofβ-particle is

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

When certain nucleus emits anα particle, its mass number:

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

An alpha particle has a charge of

The figure 1.007276μ shows the mass of an:

Neutron was suggested to be in the nucleus by:

The half life of radioactive substances depends upon

Rutherford performed an experiment on nuclear reactions in:

Nucleus of a hydrogen atom may contain:

The half lie of radium-226 is

Nucleon means:

A particle having the mass of electron and charge of a proton is called a

Which are not the elementary particles?

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

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ECAT Physics Chapter 21 Important MCQ's

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