ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Question # 1

When certain nucleus emits aβ-particles, is mass number:

Question # 2

Phenomenon of radioactivity is due to disintegration of

Question # 3

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

Question # 4

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 5

The number of all the protons and neutrons in a nucleus is known as

Question # 6

The nucleus left after the emission of some radiation is called:

Question # 7

Charge on proton is

Question # 8

The half lie of radium-226 is

Question # 9

The diameter of an atom is of the order

Question # 10

The isotope/s of hydrogen is /are:

Question # 11

There is present in paraffin a large amount of:

Question # 12

Examples of moderators used in a fission reactor is/are:

Question # 13

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 14

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

Question # 15

Mass of proton is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
3 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
4 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
5 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
6 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
7 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
8 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
9 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
10 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these

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