ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

Neutron was disvovered by:

Question # 2

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

Question # 3

After alpha decay the atomic number of the atom

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The half life of uranium-238 is

Question # 10

The unit of decay constant is

Question # 11

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

Question # 12

Neutron was discovered by

Question # 13

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

Question # 14

Rutherford performed an experiment on nuclear reactions in:

Question # 15

The rate of decay of radioactive substance

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
2 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
3 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
4 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
5 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
6 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
7 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
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 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
10 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks

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