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	Radioactivity was discovered by:	A. Becquerel B. Marie curie C. Pierre curie D. All of them
2	Structure of the nucleus was explained by	A. J.J Thomson B. Bohr C. Millikan D. Rutherford
3	The range of particle depends upon the factor	A. charge, mass and energy of particle B. density of medium C. ionization potential of the atoms D. all the above
4	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
5	The emission of radiations take place in elements, having charge number greater than	A. 109 B. 82 C. 69 D. 52
6	The most abundant isotope of neon is	A. neon-20 B. neon-21 C. neon-22 D. neon-23
7	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
8	When certain nucleus emits aβ-particles, is mass number:	A. Remain same B. Increases by one C. Decreases by one D. Decreases by four
9	The number of isotopes of hydrogen are	A. 2 B. 1 C. 3 D. 4
10	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

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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

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Binding energy per nucleus is

The half life of uranium-238 is

An alpha particle has a charge of

Charge on proton is

Which of the following material has smaller has life

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

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

Different radioactive material have

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

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

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

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

Radioactivity is

How many isotopes of helium are present?

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

For Protium, the mass defect is:

Curie is a unit of

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

When certain nucleus emits anα particle, its mass number:

Alfa particles are

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

A pair of quark and antiquark makes a:

In wilson cloud chamber, the air becomes saturated with:

The total charge of any nucleus is given as

Neutron was discovered by

Mass of proton is

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

Gamma rays consist of steam of

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ECAT Physics Chapter 21 Important MCQ's

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