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

Binding energy per nucleus is

Question # 2

Neutrons are

Question # 3

Different radioactive material have

Question # 4

Charge on proton is

Question # 5

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

Question # 6

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

Question # 7

Radioactivity was discovered by:

Question # 8

The half lie of radium-226 is

Question # 9

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

Question # 10

When certain nucleus emits aβ-particles, is mass number:

Question # 11

A pair of quark and antiquark makes a:

Question # 12

In wilson cloud chamber, the air becomes saturated with:

Question # 13

Which of the following material has longer half life

Question # 14

According to Rutherford atomic model, the positive charge in an atom

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
2 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
3 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
4 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
5 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
6 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
7 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
8 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
9 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
10 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

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