ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

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

Mass of neutron is

Question # 2

A particle having the mass of electron and charge of a proton is called a

Question # 3

Nuclei that have the same charge number but different mass number are called

Question # 4

Curie is a unit of

Question # 5

Radioactivity

Question # 6

Beta particles are

Question # 7

Neutrons are

Question # 8

Charge on proton is

Question # 9

The unit of decay constant is:

Question # 10

Radioactivity is

Question # 11

Heavy water is made of one oxygen atom and two atoms of:

Question # 12

In 1932 Chadwick discovered

Question # 13

The range of particle depends upon the factor

Question # 14

The half life of uranium-238 is

Question # 15

Neutron was disvovered by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
2 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
3 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
4 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
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 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
7 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
8 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
9 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
10 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these

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