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	Fraction of the decaying atoms per unit time is called	A. decay atom B. decay element C. decay constant D. decay
2	Which of the following material has smaller has life	A. uranium B. polonium C. radium D. radian
3	In radio-active decay, the original element which disintegrate to another element is called	A. element B. daughter element C. parent element D. none of these
4	Radium was discovered by:	A. Becquerel B. Marie curie C. Pierre curie D. Rutherford
5	Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called	A. deuterium B. protium C. tritium D. none of these
6	Pair production take place when energy ofγ-rays photon is	A. equal to 1.02 Mev- B. greater than 1.02 Mev C. less than 1.02 Mev D. none of these
7	The energy is found from Einstein's mass energy relation is called	A. binding energy of electron B. binding energy of proton C. binding energy of neutron D. binding energy of nucleus
8	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
9	The diameter of an atom is of the order	A. 10^-125m B. 10^-11m C. 10^-10m D. 10^-9m
10	The half life of uranium-238 is	A. 6.2 x 10⁹years B. 4.5 x 10⁹days C. 4.5 x 10⁹years D. 1.3 x 10⁶years

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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

There is present in paraffin a large amount of:

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

Neutron was discovered in

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

A mass spectrograph sort out

Which of these is not a radiation detector

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

Which of the following material has longer half life

In 1932 Chadwick discovered

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

Alfa particles are

The diameter of an atom is of the order

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

Nucleus consists of

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

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

The rate of decay of radioactive substance

Neon gas have three isotopes whose atomic numbers are

The half life of radioactive substances depends upon

Which of the following material has smaller has life

The distance travelled byα-particle in a medium before coming to rest, is called

The total charge of any nucleus is given as

Radioactivity

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

Electrons are

Neutrons are

Neutron was disvovered by:

The nucleus/nuclei of hydrogen is/are:

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

The number of protons inside a nucleus is called

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ECAT Physics Chapter 21 Important MCQ's

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