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	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
2	γ-rays behave like a particle because they explain the	A. Compton effect B. Photoelectric effect C. Pair-production D. all the above
3	There is present in paraffin a large amount of:	A. Nitrogen B. Hydrogen C. Carbon D. Baryllium
4	The distance travelled byα-particle in a medium before coming to rest, is called	A. range ofγ-particle B. range of neutrons C. range of particle D. none of these
5	In his experiment on nuclear reactions, Rutherford bombardedα particles on:	A. Nitrogen B. Hydrogen C. Lead D. Oxygen
6	For an atom having atomic number Z and atomic weight A, the number of electron in an atoms	A. A - Z B. A + Z C. Z D. A
7	The total charge of any nucleus is given as	A. Ze² B. Z²e C. Z/e D. Ze
8	Curie is a unit of	A. reluctance B. resistivity C. binding energy D. radioactivity
9	Charge on neutron is	A. 1.6 x 10^-19C B. zero C. -1.6 x 10^-19C D. 1.2 x 10^-19C
10	When radioactive nucleus emits aβ-particle, the proton-neutron ratio	A. decrease B. increase C. same D. none 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

Radioactivity was discovered by

Phenomenon of radioactivity is due to disintegration of

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

The chemical properties of an element depends upon the number of

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

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

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

The nucleus/nuclei of hydrogen is/are:

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

The unit of decay constant is:

Mass of proton is

Which of the following material has smaller has life

Which are not the elementary particles?

Rate of decay is actually described by.

Structure of the nucleus was explained by

Nuclei that have the same charge number but different mass number are called

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

Curie is a unit of

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

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

Neon gas have three isotopes whose atomic numbers are

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

Nucleus of a hydrogen atom may contain:

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

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

Pair production take place when energy ofγ-rays photon is

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

The rate of decay of a radioactive substance

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

The chemical behaviour of an atom is determined by

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ECAT Physics Chapter 21 Important MCQ's

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