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 nucleus/nuclei of hydrogen is/are:	A. Proton B. Deuteron C. Triton D. All of these
2	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
3	The most abundant isotope of neon is	A. neon-20 B. neon-21 C. neon-22 D. neon-23
4	The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called	A. nuclear fission B. nuclear fusion C. man defect D. radioactivity
5	Beta particles are	A. hydrogen nuclei B. helium nuclei C. electrons D. photons
6	Radioactivity	A. is exhibited more by semiconductors in general B. in exhibited more by the element when they are coupled C. with other radioactive elements by a covalent bond D. is an atomic property of radioactive elements
7	How many isotopes of helium are present?	A. 1 B. 2 C. 3 D. 4
8	The figure 1.007276μ shows the mass of an:	A. Atom B. Positron C. Electron D. Neutron
9	When radioactive nucleus emits aβ-particle, the proton-neutron ratio	A. decrease B. increase C. same D. none of these
10	In his experiment on nuclear reactions, Rutherford bombardedα particles on:	A. Nitrogen B. Hydrogen C. Lead D. Oxygen

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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

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

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

The range of particle depends upon the factor

Nucleus consists of

Charge on proton is

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

Mass of proton is of order of

The rate of decay of a radioactive substance

Radioactivity was discovered by:

The most abundant isotope of neon is

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

The unit of decay constant is

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

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Neutron was discovered by

Mass of neutron is

Proton was discovered by Rutherford in

In radio-active decay, the original element which disintegrate to another element is called

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

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

A mass spectrograph sort out

The chemical properties of all the isotopes of an elements are

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

Structure of the nucleus was explained by

How many isotopes of helium are present?

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

The penetration power ofβ-particle is

The isotope/s of hydrogen is /are:

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

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

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ECAT Physics Chapter 21 Important MCQ's

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