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

Alfa particles are

Question # 2

Fraction of the decaying atoms per unit time is called

Question # 3

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

Question # 4

Electrons are

Question # 5

The counter, which also provides the power to the G.M. tube is called:

Question # 6

After alpha decay the atomic number of the atom

Question # 7

Nucleus consists of

Question # 8

Neon gas have three isotopes whose atomic numbers are

Question # 9

The rate of decay of radioactive substance

Question # 10

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 11

Rutherford performed an experiment on nuclear reactions in:

Question # 12

Mass of proton is of order of

Question # 13

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

Question # 14

The most abundant isotope of neon is

Question # 15

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
2 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
3 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
4 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
5 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
6 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
7 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
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 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
10 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these

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