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

Mass of neutron is

Question # 2

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 3

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 4

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 5

Radium was discovered by:

Question # 6

Charge on neutron is

Question # 7

Fraction of the decaying atoms per unit time is called

Question # 8

Mass of proton is

Question # 9

The figure 1.007276μ shows the mass of an:

Question # 10

The time required for a radioactive material to decrease in active by one half is called

Question # 11

Neutrons are

Question # 12

A mass spectrograph sort out

Question # 13

For Protium, the mass defect is:

Question # 14

Which of these is not a radiation detector

Question # 15

Neutron was suggested to be in the nucleus by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
2 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
3 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
4 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
5 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
6 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
7 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
8 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
9 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
10 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

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