ECAT Pre General Science Chapter 21 online mcq test with answers for Physics chapter 21 (Nuclear Physics)

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LAVANYA 31 - May - 2018 04 Min 45 Sec 110/120
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Malik Farhan 23 - May - 2021 07 Min 32 Sec 10/120

ECAT Physics Chapter 21 Important MCQ's

Sr.#	Question	Answer
1	Fraction of the decaying atoms per unit time is called	A. decay atom B. decay element C. decay constant D. decay
2	For Protium, the mass defect is:	A. Infinite B. Zero C. Very large D. A few grams
3	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
4	Radioactivity was discovered by	A. Rutherford B. Henri Becqureal C. Maxwell D. James Chadwick
5	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
6	When certain nucleus emits aβ-particles, is mass number:	A. Remain same B. Increases by one C. Decreases by one D. Decreases by four
7	Mass of proton is	A. 1.67 x 10^-27kg B. 1.67 x 10^-31kg C. 1.66 x 10^-34kg D. 1.67 x 10^-17kg
8	The penetration power ofβ-particle is	A. zero B. less thanα-particle C. equal toα-particle D. greater thanα-particle
9	Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:	A. 50 B. 100 C. 150 D. 200
10	Maric Curie and Pieree Curie discovered two new radioactive elements, which are called	A. polonium uranium B. uranium and radium C. polonium and radium 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

Marie curie and Pierre curie discovered:

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

A pair of quark and antiquark makes a:

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

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

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

The nucleus/nuclei of hydrogen is/are:

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

An alpha particle has a charge of

Nucleon means:

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

The range ofβ-particle in air is greater than that ofα-particle by

The isotope/s of hydrogen is /are:

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

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

The unit of decay constant is

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

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

Charge on proton is

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

U-238 present in the natural uranium is about:

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

The range of particle depends upon the factor

The number of isotopes of hydrogen are

Fraction of the decaying atoms per unit time is called

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

Referring to the above figure, we can say that of all the elements, the most stable element is

Proton was discovered by Rutherford in

Radioactivity

The chemical properties of all the isotopes of an elements are

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