ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

00:00
Question # 1

Rate of decay is actually described by.

Question # 2

The diameter of an atom is of the order

Question # 3

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

Question # 4

1 amu is equal to

Question # 5

The unit of decay constant is

Question # 6

The rate of decay of radioactive substance

Question # 7

The half life of uranium-238 is

Question # 8

A pair of quark and antiquark makes a:

Question # 9

Charge on neutron is

Question # 10

Marie curie and Pierre curie discovered:

Question # 11

There is present in paraffin a large amount of:

Question # 12

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

Question # 13

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

Question # 14

Neon gas have three isotopes whose atomic numbers are

Question # 15

A mass spectrograph sort out

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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 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
3 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
4 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
5 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
6 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
7 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
8 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
9 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
10 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity

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