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

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

Question # 2

Proton was discovered by Rutherford in

Question # 3

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

Question # 4

The diameter of an atom is of the order

Question # 5

A pair of quark and antiquark makes a:

Question # 6

A curie represents a very strong source of

Question # 7

The penetration power ofβ-particle is

Question # 8

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

Question # 9

In wilson cloud chamber, the air becomes saturated with:

Question # 10

Mass of proton is

Question # 11

Nucleus consists of

Question # 12

The figure 1.007276μ shows the mass of an:

Question # 13

An alpha particle has a charge of

Question # 14

Radium was discovered by:

Question # 15

Which of these is not a radiation detector

Question # 16

Alfa particles are

Question # 17

The number of protons inside a nucleus is called

Question # 18

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

Question # 19

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

Question # 20

Rate of decay is actually described by.

Question # 21

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

Question # 22

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

Question # 23

In 1932 Chadwick discovered

Question # 24

The number of isotopes of hydrogen are

Question # 25

U-238 present in the natural uranium is about:

Question # 26

When certain nucleus emits anα particle, its mass number:

Question # 27

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

Question # 28

Neon gas have three isotopes whose atomic numbers are

Question # 29

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

Question # 30

The chemical behaviour of an atom is determined by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
2 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
3 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
4 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
5 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
6 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
7 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
8 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
9 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
10 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

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