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

00:00
Question # 1

The half lie of radium-226 is

Question # 2

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

Question # 3

Beta particles are

Question # 4

The chemical properties of all the isotopes of an elements are

Question # 5

The isotope/s of hydrogen is /are:

Question # 6

The half life of uranium-238 is

Question # 7

The nucleus/nuclei of hydrogen is/are:

Question # 8

In radio-active decay, the original element which disintegrate to another element is called

Question # 9

U-238 present in the natural uranium is about:

Question # 10

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

Question # 11

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

Question # 12

The rate of decay of a radioactive substance

Question # 13

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 14

Charge on proton is

Question # 15

Alfa particles are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
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 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
4 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
5 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
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
6 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
7 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
8 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
9 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
10 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times

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