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

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Question # 1

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

Question # 2

The most abundant isotope of neon is

Question # 3

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 4

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 5

A mass spectrograph sort out

Question # 6

γ-rays are

Question # 7

The total charge of any nucleus is given as

Question # 8

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

Question # 9

Neutron was discovered in

Question # 10

Nucleus consists of

Question # 11

In wilson cloud chamber, the air becomes saturated with:

Question # 12

An alpha particle has a charge of

Question # 13

Which of these is not a radiation detector

Question # 14

Neutrons are

Question # 15

Mass of neutron is

Question # 16

Rutherford performed an experiment on nuclear reactions in:

Question # 17

The isotope/s of hydrogen is /are:

Question # 18

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

Question # 19

For Protium, the mass defect is:

Question # 20

There is present in paraffin a large amount of:

Question # 21

The chemical properties of an element depends upon the number of

Question # 22

Proton was discovered by Rutherford in

Question # 23

When certain nucleus emits anα particle, its mass number:

Question # 24

γ-rays behave like a particle because they explain the

Question # 25

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

Question # 26

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

Question # 27

The diameter of an atom is of the order

Question # 28

Rate of decay is actually described by.

Question # 29

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

Question # 30

The number of all the protons and neutrons in a nucleus is known as

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
2 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
3 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
4 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
5 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
6 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
7 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
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 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
10 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)

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