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

After alpha decay the atomic number of the atom

Question # 2

1 amu is equal to.

Question # 3

Radiation detector are used to

Question # 4

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

Question # 5

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 6

Neutron was discovered by

Question # 7

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

Question # 8

The nucleus/nuclei of hydrogen is/are:

Question # 9

Curie is a unit of

Question # 10

Neutrons are

Question # 11

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

Question # 12

The time required for a radioactive material to decrease in active by one half is called

Question # 13

Nucleon means:

Question # 14

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

Question # 15

A mass spectrograph sort out

Question # 16

Radioactivity is

Question # 17

An alpha particle has a charge of

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

A curie represents a very strong source of

Question # 22

Binding energy per nucleus is

Question # 23

The number of isotopes of hydrogen are

Question # 24

Charge on neutron is

Question # 25

The total charge of any nucleus is given as

Question # 26

Radioactivity was discovered by:

Question # 27

The most abundant isotope of neon is

Question # 28

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

Question # 29

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

Question # 30

A mass difference of 0.0012 u is equivalent to and energy of:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
2 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
3 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
4 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
5 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
6 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
7 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
8 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
9 When thorium nucleus emits aβ-particle, the daughter nucleus is called:
A. Protactinium
B. Actinium
C. Uranium
D. Radium
10 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron

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