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

Radium was discovered by:

Question # 2

In 1932 Chadwick discovered

Question # 3

Neutrons are

Question # 4

After alpha decay the atomic number of the atom

Question # 5

Binding energy per nucleus is

Question # 6

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 7

The figure 1.007276μ shows the mass of an:

Question # 8

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

Question # 9

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

Question # 10

β-particles are easily deflected by collisions than heavy

Question # 11

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

Question # 12

Curie is a unit of

Question # 13

The number of isotopes of hydrogen are

Question # 14

The half life of radioactive substances depends upon

Question # 15

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 16

Neutron was disvovered by:

Question # 17

Neutron was suggested to be in the nucleus by:

Question # 18

When certain nucleus emits anα particle, its mass number:

Question # 19

The total charge of any nucleus is given as

Question # 20

Three quarks make:

Question # 21

The isotope/s of hydrogen is /are:

Question # 22

The penetration power ofβ-particle is

Question # 23

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 24

Nucleon means:

Question # 25

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

Question # 26

The chemical properties of an element depends upon the number of

Question # 27

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

Question # 28

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

Question # 29

Proton was discovered by Rutherford in

Question # 30

The rate of decay of a radioactive substance

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
2 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
3 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
4 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
5 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
6 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
7 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
8 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
9 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
10 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick

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