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	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
2	The figure 1.007276μ shows the mass of an:	A. Atom B. Positron C. Electron D. Neutron
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	Nucleus of a hydrogen atom may contain:	A. One neutron only B. Two protons and one neutron C. Two protons and two neutrons D. Aany of above
5	The nucleus left after the emission of some radiation is called:	A. Parent nucleus B. Daughter necleus C. Mother necleus D. Any of these
6	In his experiment on nuclear reactions, Rutherford bombardedα particles on:	A. Nitrogen B. Hydrogen C. Lead D. Oxygen
7	Neutrons are	A. positive charge B. negatively charged C. massless D. neutral
8	A mass spectrograph sort out	A. molecules B. atoms C. elements D. isotopes
9	The missing mass which is converted to energy in the formation of nucleus, is called	A. packing fraction B. mass defect C. binding energy D. none of these
10	The emission of radiations take place in elements, having charge number greater than	A. 109 B. 82 C. 69 D. 52

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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

Different radioactive material have

A mass spectrograph sort out

Radioactivity is

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Radiation detector are used to

Beta particles are

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

How many isotopes of helium are present?

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

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

Neutron was suggested to be in the nucleus by:

Radioactivity was discovered by

The rate of decay of radioactive substance

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

The time required for a radioactive material to decrease in active by one half is called

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

Mass of proton is of order of

Structure of the nucleus was explained by

The number if neutrons in the nucleus of 92U235are

The energy is found from Einstein's mass energy relation is called

Neutron was disvovered by:

Neutrons are

Mass of neutron is

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

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

The reciprocal of decay constant λ of a radioactive material is:

Charge on proton is

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

The number of isotopes of hydrogen are

Heavy water is made of one oxygen atom and two atoms of:

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ECAT Physics Chapter 21 Important MCQ's

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The number if neutrons in the nucleus of ₉₂U²³⁵are