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 nuclei of an element having the same charge number but different mass numbers are called:	A. Isobars B. Isotopes C. Isomers D. Isobaric
2	The missing mass which is converted to energy in the formation of nucleus, is called	A. packing fraction B. mass defect C. binding energy D. none of these
3	A particle having the mass of electron and charge of a proton is called a	A. photon B. position C. antiproton D. antineutrino
4	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
5	The chemical behaviour of an atom is determined by	A. binding energy B. atomic number C. mass number D. number of isotopes
6	The isotope/s of hydrogen is /are:	A. Protium B. Deuterium C. Tritium D. Both (A) and (B)
7	For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is	A. A - Z B. A C. Z D. A + Z
8	The nucleus/nuclei of hydrogen is/are:	A. Proton B. Deuteron C. Triton D. All of these
9	Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called	A. deuterium B. protium C. tritium D. none of these
10	Neon gas have three isotopes whose atomic numbers are	A. 20, 24 , 23 B. 20, 21 , 22 C. 20, 19 , 21 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

The number if neutrons in the nucleus of 92U235are

Alfa , beta and gamma rays are emitted from a radio-active substance

The chemical properties of all the isotopes of an elements are

When a charged particle passes through matter, it produces ionization, this effect is used in

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

1 amu is equal to.

γ-rays are

The nuclei of an element having the same charge number but different mass numbers are called:

Charge on proton is

The unit of decay constant is:

Neutron was discovered in

Electrons are

Binding energy per nucleus is

The isotope/s of hydrogen is /are:

Gamma rays consist of steam of

The half lie of radium-226 is

When certain nucleus emits anα particle, its mass number:

In wilson cloud chamber, the air becomes saturated with:

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

The unit of decay constant is

There is present in paraffin a large amount of:

When certain nucleus emits aβ-particles, is mass number:

The missing mass which is converted to energy in the formation of nucleus, is called

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

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

The range of particle depends upon the factor

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

Pair production take place when energy ofγ-rays photon is

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

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

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ECAT Physics Chapter 21 Important MCQ's

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The number if neutrons in the nucleus of ₉₂U²³⁵are