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	In radioactive decay, the new element which is formed due to the disintegration of original element is called	A. element B. daughter element C. parent element D. none of these
2	According to Rutherford atomic model, the positive charge in an atom	A. is concentrated at its centre B. is in the form of positive electron at same distance from its centre C. is spread uniformly through its volume D. none of these
3	The amount of energy equivalent to 1 a.m.u is	A. 9.315 Mev B. 93.15 Mev C. 931.5 Mev D. 2.22 Mev
4	Fraction of the decaying atoms per unit time is called	A. decay atom B. decay element C. decay constant D. decay
5	The chemical behaviour of an atom is determined by	A. binding energy B. atomic number C. mass number D. number of isotopes
6	Binding energy per nucleus is	A. greater for heavy nucleus B. least for heavy nucleus C. greatest for light nuclei D. decreases for medium weight niclei
7	The counter, which also provides the power to the G.M. tube is called:	A. Thin mica window B. thin glass window C. Airy window D. Wooden window
8	A particle having the mass of electron and charge of a proton is called a	A. photon B. position C. antiproton D. antineutrino
9	Nucleus consists of	A. proton and neutron B. protons and electron C. electron and neutron D. protons only
10	Nucleon means:	A. Only electrons B. Only neutrons C. Only protons D. Both (A ) and (C)

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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 unit of decay constant is:

The half life of uranium-238 is

Three quarks make:

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

The half life of radioactive substances depends upon

The figure 1.007276μ shows the mass of an:

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

Charge on neutron is

When a nucleus emits an alpha particle, it atomic mass decreased by

The unit of decay constant is

The chemical properties of an element depends upon the number of

The range of particle depends upon the factor

Which of the following material has smaller has life

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

Proton was discovered by Rutherford in

Gamma rays consist of steam of

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

When certain nucleus emits anα particle, its mass number:

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

The rate of decay of radioactive substance

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

The chemical behaviour of an atom is determined by

Mass of neutron is

Nucleus of a hydrogen atom may contain:

For Protium, the mass defect is:

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

Neutron was disvovered by:

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

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

The rate of decay of a radioactive substance

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ECAT Physics Chapter 21 Important MCQ's

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