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

Structure of the nucleus was explained by

Question # 2

1 amu is equal to

Question # 3

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

Question # 4

The chemical properties of all the isotopes of an elements are

Question # 5

Beta particles are

Question # 6

Neutrons are

Question # 7

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

Question # 8

Neutron was suggested to be in the nucleus by:

Question # 9

Neutron was discovered in

Question # 10

Radioactivity was discovered by:

Question # 11

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

Question # 12

The diameter of an atom is of the order

Question # 13

U-238 present in the natural uranium is about:

Question # 14

The half life of radioactive substances depends upon

Question # 15

The half lie of radium-226 is

Question # 16

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

Question # 17

1 amu is equal to.

Question # 18

How many isotopes of helium are present?

Question # 19

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

Question # 20

Proton was discovered by Rutherford in

Question # 21

After alpha decay the atomic number of the atom

Question # 22

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 23

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

Question # 24

The number of isotopes of hydrogen are

Question # 25

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

Question # 26

The nucleus/nuclei of hydrogen is/are:

Question # 27

Nucleon means:

Question # 28

The unit of decay constant is

Question # 29

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 30

Nucleus consists of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
2 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
3 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
4 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
5 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
6 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
7 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
8 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
9 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
10 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4

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