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

Neutron was suggested to be in the nucleus by:

Question # 3

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 4

The figure 1.007276μ shows the mass of an:

Question # 5

Pair production take place when energy ofγ-rays photon is

Question # 6

The rate of decay of radioactive substance

Question # 7

The most abundant isotope of neon is

Question # 8

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 9

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

Question # 10

U-238 present in the natural uranium is about:

Question # 11

The half life of uranium-238 is

Question # 12

A pair of quark and antiquark makes a:

Question # 13

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

Question # 14

Charge on proton is

Question # 15

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
2 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
3 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
4 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
5 After alpha decay the atomic number of the atom
A. increase by four
B. decreases by two
C. increases by two
D. decrease by four
6 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
7 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
8 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
9 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
10 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves

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