ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

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

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ECAT Pre General Science Physics Chapter 21 Nuclear Physics

00:00
Question # 1

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

Question # 2

The penetration power ofβ-particle is

Question # 3

The figure 1.007276μ shows the mass of an:

Question # 4

Which of these is not a radiation detector

Question # 5

The half lie of radium-226 is

Question # 6

Electrons are

Question # 7

The number of isotopes of hydrogen are

Question # 8

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 9

Rate of decay is actually described by.

Question # 10

A pair of quark and antiquark makes a:

Question # 11

Neutron was disvovered by:

Question # 12

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

Question # 13

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

Question # 14

Alfa particles are

Question # 15

The chemical properties of all the isotopes of an elements are

Question # 16

The counter, which also provides the power to the G.M. tube is called:

Question # 17

The nucleus/nuclei of hydrogen is/are:

Question # 18

A mass spectrograph sort out

Question # 19

The most abundant isotope of neon is

Question # 20

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 21

The chemical properties of an element depends upon the number of

Question # 22

γ-rays are

Question # 23

Fraction of the decaying atoms per unit time is called

Question # 24

Nucleus consists of

Question # 25

The half life of radioactive substances depends upon

Question # 26

Radioactivity was discovered by

Question # 27

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 28

Mass of neutron is

Question # 29

Examples of moderators used in a fission reactor is/are:

Question # 30

The half life of uranium-238 is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
2 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
3 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
4 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
5 When thorium nucleus emits aβ-particle, the daughter nucleus is called:
A. Protactinium
B. Actinium
C. Uranium
D. Radium
6 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
7 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
8 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
9 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
10 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons

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