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

Which are not the elementary particles?

Question # 2

The unit of decay constant is

Question # 3

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

Question # 4

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

Question # 5

Nucleus consists of

Question # 6

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

Question # 7

Three quarks make:

Question # 8

Different radioactive material have

Question # 9

Neutron was suggested to be in the nucleus by:

Question # 10

The figure 1.007276μ shows the mass of an:

Question # 11

The penetration power ofβ-particle is

Question # 12

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

Question # 13

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 14

Proton was discovered by Rutherford in

Question # 15

A mass spectrograph sort out

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
2 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
3 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
4 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
5 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
6 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
7 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
8 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
9 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
10 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these

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