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

00:00
Question # 1

The nucleus/nuclei of hydrogen is/are:

Question # 2

The unit of decay constant is

Question # 3

Nucleus consists of

Question # 4

Nucleon means:

Question # 5

Mass of proton is

Question # 6

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

Question # 7

The range of particle depends upon the factor

Question # 8

A curie represents a very strong source of

Question # 9

When a nucleus emits an alpha particles, its charge number decreases by

Question # 10

γ-rays are

Question # 11

γ-rays behave like a particle because they explain the

Question # 12

The half life of radioactive substances depends upon

Question # 13

The isotope/s of hydrogen is /are:

Question # 14

Different radioactive material have

Question # 15

In radioactive decay, the new element which is formed due to the disintegration of original element is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The rate of decay of radioactive substance
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time
2 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
3 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
4 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
5 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
6 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
7 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
8 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
9 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
10 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron

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