ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Question # 1

The isotope/s of hydrogen is /are:

Question # 2

A pair of quark and antiquark makes a:

Question # 3

Nucleus of a hydrogen atom may contain:

Question # 4

1 amu is equal to.

Question # 5

For Protium, the mass defect is:

Question # 6

Mass of proton is of order of

Question # 7

Neon gas have three isotopes whose atomic numbers are

Question # 8

Radioactivity was discovered by:

Question # 9

The half life of radioactive substances depends upon

Question # 10

The rate of decay of a radioactive substance

Question # 11

The half lie of radium-226 is

Question # 12

In wilson cloud chamber, the air becomes saturated with:

Question # 13

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 14

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

Question # 15

Structure of the nucleus was explained by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Marie curie and Pierre curie discovered:
A. Uranium
B. Polonium
C. Radium
D. Both (A) and (C)
2 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
3 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
4 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
5 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
6 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
7 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
8 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
9 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
10 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these

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