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

00:00
Question # 1

U-238 present in the natural uranium is about:

Question # 2

Radioactivity

Question # 3

The half lie of radium-226 is

Question # 4

The rate of decay of radioactive substance

Question # 5

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

Question # 6

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 7

After alpha decay the atomic number of the atom

Question # 8

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 9

Mass of proton is of order of

Question # 10

The unit of decay constant is:

Question # 11

The half life of radioactive substances depends upon

Question # 12

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

Question # 13

The chemical properties of all the isotopes of an elements are

Question # 14

Marie curie and Pierre curie discovered:

Question # 15

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Rutherford performed an experiment on nuclear reactions in:
A. 1718 A.D
B. 1818 A.D
C. 1918 A.D
D. 2001 A.D.
2 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
3 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
4 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
5 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
6 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
7 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
8 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
9 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
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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  • alishba rasheed

    alishba rasheed

    03 Mar 2018

    easy mcqs

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