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

The number of protons inside a nucleus is called

Question # 2

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

Question # 3

Radioactivity is

Question # 4

The emission of radiations take place in elements, having charge number greater than

Question # 5

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 6

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 7

The amount of energy equivalent to 1 a.m.u is

Question # 8

Gamma rays consist of steam of

Question # 9

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

Question # 10

Which of the following material has longer half life

Question # 11

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

Question # 12

The rate of decay of radioactive substance

Question # 13

The half life of uranium-238 is

Question # 14

1 amu is equal to

Question # 15

Nucleon means:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
2 Alfa , beta and gamma rays are emitted from a radio-active substance
A. spontaneously
B. when it is heated
C. when it is exposed to light
D. When it interacts with the other particle
3 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
4 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
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 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
7 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
8 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
9 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
10 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector

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