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

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

Question # 2

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

Question # 3

Nucleus of a hydrogen atom may contain:

Question # 4

The reciprocal of decay constant λ of a radioactive material is:

Question # 5

The chemical properties of all the isotopes of an elements are

Question # 6

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

Question # 7

In radio-active decay, the original element which disintegrate to another element is called

Question # 8

1 amu is equal to.

Question # 9

According to Rutherford atomic model, the positive charge in an atom

Question # 10

The isotope/s of hydrogen is /are:

Question # 11

The range of particle depends upon the factor

Question # 12

Alfa particles are

Question # 13

Neutron was discovered in

Question # 14

After alpha decay the atomic number of the atom

Question # 15

Neon gas have three isotopes whose atomic numbers are

Question # 16

In wilson cloud chamber, the air becomes saturated with:

Question # 17

A mass spectrograph sort out

Question # 18

Nucleus consists of

Question # 19

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

Question # 20

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

Question # 21

Different radioactive material have

Question # 22

Proton was discovered by Rutherford in

Question # 23

Gamma rays consist of steam of

Question # 24

The diameter of an atom is of the order

Question # 25

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

Question # 26

The chemical behaviour of an atom is determined by

Question # 27

Nucleon means:

Question # 28

The rate of decay of a radioactive substance

Question # 29

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

Question # 30

A pair of quark and antiquark makes a:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
3 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
4 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
5 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
6 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
7 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
8 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
9 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
10 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life

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