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

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

Question # 2

Which of the following material has longer half life

Question # 3

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

Question # 4

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 # 5

When certain nucleus emits anα particle, its mass number:

Question # 6

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

Question # 7

Gamma rays consist of steam of

Question # 8

In 1932 Chadwick discovered

Question # 9

The chemical properties of an element depends upon the number of

Question # 10

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

Question # 11

Charge on neutron is

Question # 12

β-particles are easily deflected by collisions than heavy

Question # 13

After alpha decay the atomic number of the atom

Question # 14

The number of isotopes of hydrogen are

Question # 15

The number of protons inside a nucleus is called

Question # 16

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

Question # 17

U-238 present in the natural uranium is about:

Question # 18

When certain nucleus emits aβ-particles, is mass number:

Question # 19

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

Question # 20

Which of these is not a radiation detector

Question # 21

Nucleus consists of

Question # 22

The chemical behaviour of an atom is determined by

Question # 23

How many isotopes of helium are present?

Question # 24

Neutron was suggested to be in the nucleus by:

Question # 25

Phenomenon of radioactivity is due to disintegration of

Question # 26

1 amu is equal to

Question # 27

Binding energy per nucleus is

Question # 28

Proton was discovered by Rutherford in

Question # 29

Radioactivity is

Question # 30

The total charge of any nucleus is given as

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
2 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
3 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
4 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
5 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
6 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
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 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
9 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times
10 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium

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