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

There is present in paraffin a large amount of:

Question # 2

The number of isotopes of hydrogen are

Question # 3

The figure 1.007276μ shows the mass of an:

Question # 4

How many isotopes of helium are present?

Question # 5

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 6

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 7

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

Question # 8

Neutron was discovered by

Question # 9

The total charge of any nucleus is given as

Question # 10

Radioactivity

Question # 11

Which of the following material has smaller has life

Question # 12

The nucleus/nuclei of hydrogen is/are:

Question # 13

The half lie of radium-226 is

Question # 14

Alfa particles are

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
2 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
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 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 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
6 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
7 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
8 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
9 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
10 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these

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