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

Which of the following material has smaller has life

Question # 2

Which of these is not a radiation detector

Question # 3

The rate of decay of a radioactive substance

Question # 4

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

Question # 5

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

Question # 6

Three quarks make:

Question # 7

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

Question # 8

1 amu is equal to.

Question # 9

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 10

The most abundant isotope of neon is

Question # 11

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

Question # 12

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

Question # 13

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 14

Radioactivity

Question # 15

Neutron was discovered by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
2 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All 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 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
5 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
6 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
7 After alpha decay the atomic number of the atom
A. increase by four
B. decreases by two
C. increases by two
D. decrease by four
8 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
9 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
10 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle

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