ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

00:00
Question # 1

After alpha decay the atomic number of the atom

Question # 2

Neon gas have three isotopes whose atomic numbers are

Question # 3

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

Question # 4

A mass spectrograph sort out

Question # 5

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

Question # 6

The time required for a radioactive material to decrease in active by one half is called

Question # 7

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

Question # 8

The isotope/s of hydrogen is /are:

Question # 9

The chemical properties of all the isotopes of an elements are

Question # 10

Alfa particles are

Question # 11

Nucleus consists of

Question # 12

Neutron was discovered by

Question # 13

For Protium, the mass defect is:

Question # 14

Nucleus of a hydrogen atom may contain:

Question # 15

Gamma rays consist of steam of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
2 When thorium nucleus emits aβ-particle, the daughter nucleus is called:
A. Protactinium
B. Actinium
C. Uranium
D. Radium
3 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
4 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
5 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
6 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
7 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
8 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
9 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
10 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen

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