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

β-particles are easily deflected by collisions than heavy

Question # 2

Mass of proton is

Question # 3

Mass of neutron is

Question # 4

The number of isotopes of hydrogen are

Question # 5

Different radioactive material have

Question # 6

The half life of radioactive substances depends upon

Question # 7

How much time, theα-particle more massive than an electron

Question # 8

The range of particle depends upon the factor

Question # 9

The total charge of any nucleus is given as

Question # 10

Which of the following material has smaller has life

Question # 11

Phenomenon of radioactivity is due to disintegration of

Question # 12

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

Question # 13

The rate of decay of a radioactive substance

Question # 14

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

Question # 15

An alpha particle has a charge of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
2 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
3 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
4 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
5 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
6 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
7 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
8 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
9 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
10 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

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