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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Ukasha Rana 29 - Apr - 2022 10 Min 50 Sec 100/120
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Gorak Danda 24 - Jun - 2024 08 Min 03 Sec 80/120
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haseeb 12 - Sep - 2021 07 Min 18 Sec 65/120
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Aleem Tahir 20 - Apr - 2021 10 Min 50 Sec 65/120
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Hamza Mukhtair 14 - Jul - 2022 06 Min 35 Sec 50/120
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ifrah Sheerazi 24 - Jun - 2021 10 Min 50 Sec 50/120
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umar 12 - Aug - 2021 10 Min 50 Sec 45/120
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Neha Khan 02 - Dec - 2021 10 Min 50 Sec 40/120
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Faisal Mehrban 22 - Jun - 2021 10 Min 50 Sec 40/120
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Sýèd Zàhàd 24 - Jun - 2022 10 Min 50 Sec 30/120
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Sami Saleem 23 - May - 2023 10 Min 50 Sec 25/120
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Faraz Ahmad 06 - May - 2021 10 Min 50 Sec 15/120
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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	If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be	A. Equal to 1 B. Less than 1 C. Greater than 1 D. Infinity
2	When radioactive nucleus emits aβ-particle, the proton-neutron ratio	A. decrease B. increase C. same D. none of these
3	The number if neutrons in the nucleus of ₉₂U²³⁵are	A. Infinite B. 92 C. 235 D. 143
4	Proton was discovered by Rutherford in	A. 1915 B. 1906 C. 1910 D. 1920
5	Beta particles are	A. hydrogen nuclei B. helium nuclei C. electrons D. photons
6	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
7	The half life of uranium-238 is	A. 6.2 x 10⁹years B. 4.5 x 10⁹days C. 4.5 x 10⁹years D. 1.3 x 10⁶years
8	The emission of radiations take place in elements, having charge number greater than	A. 109 B. 82 C. 69 D. 52
9	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
10	Which of these is not a radiation detector	A. Wilson cloud chamber B. cyclotron acceleration C. Geiger Miller counter D. solid state detector

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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

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

A curie represents a very strong source of

The nucleus left after the emission of some radiation is called:

After alpha decay the atomic number of the atom

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

Mass of proton is

The unit of decay constant is

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

Charge on neutron is

γ-rays are

The chemical properties of an element depends upon the number of

Binding energy per nucleus is

Alfa particles are

Neutron was discovered in

Charge on proton is

Pair production take place when energy ofγ-rays photon is

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

The total charge of any nucleus is given as

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

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

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

The chemical behaviour of an atom is determined by

The energy is found from Einstein's mass energy relation is called

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

In 1932 Chadwick discovered

1 amu is equal to

The penetration power ofβ-particle is

Which of the following material has smaller has life

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ECAT Physics Chapter 21 Important MCQ's

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