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

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Question # 1

Different radioactive material have

Question # 2

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 3

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

Question # 4

β-particles are easily deflected by collisions than heavy

Question # 5

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 6

Beta particles are

Question # 7

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

Question # 8

The chemical properties of an element depends upon the number of

Question # 9

The unit of decay constant is:

Question # 10

Alfa particles are

Question # 11

A particle having the mass of electron and charge of a proton is called a

Question # 12

U-238 present in the natural uranium is about:

Question # 13

A curie represents a very strong source of

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
2 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
3 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
4 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
5 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
6 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
7 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
8 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
9 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
10 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year

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