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

Neutron was suggested to be in the nucleus by:

Question # 2

In radio-active decay, the original element which disintegrate to another element is called

Question # 3

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

Question # 4

γ-rays are

Question # 5

Radioactivity was discovered by:

Question # 6

Radioactivity was discovered by

Question # 7

Which of the following material has smaller has life

Question # 8

Proton was discovered by Rutherford in

Question # 9

Heavy water is made of one oxygen atom and two atoms of:

Question # 10

In wilson cloud chamber, the air becomes saturated with:

Question # 11

The range of particle depends upon the factor

Question # 12

Curie is a unit of

Question # 13

Nucleon means:

Question # 14

A mass spectrograph sort out

Question # 15

Neutrons are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 When thorium nucleus emits aβ-particle, the daughter nucleus is called:
A. Protactinium
B. Actinium
C. Uranium
D. Radium
2 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
3 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
4 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
5 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
6 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
7 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
8 The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
A. 3 more neutrons
B. 3 more electrons
C. 3 more protons
D. 3 more ions
9 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
10 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

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