ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

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

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

Question # 2

γ-rays behave like a particle because they explain the

Question # 3

Rutherford performed an experiment on nuclear reactions in:

Question # 4

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 5

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 6

Radium was discovered by:

Question # 7

Radiation detector are used to

Question # 8

An alpha particle has a charge of

Question # 9

Different radioactive material have

Question # 10

Binding energy per nucleus is

Question # 11

The energy is found from Einstein's mass energy relation is called

Question # 12

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

Question # 13

Which of the following material has smaller has life

Question # 14

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

Question # 15

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

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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 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
3 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
4 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
5 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
6 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
7 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
8 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these
9 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
10 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron

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