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

After alpha decay the atomic number of the atom

Question # 2

Radiation detector are used to

Question # 3

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

Question # 4

There is present in paraffin a large amount of:

Question # 5

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

Question # 6

Proton was discovered by Rutherford in

Question # 7

γ-rays are

Question # 8

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

Question # 9

Which of the following material has longer half life

Question # 10

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

Question # 11

The chemical properties of all the isotopes of an elements are

Question # 12

Binding energy per nucleus is

Question # 13

Pair production take place when energy ofγ-rays photon is

Question # 14

The nucleus/nuclei of hydrogen is/are:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
2 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
3 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
4 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
5 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
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 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
8 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
9 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
10 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four

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