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

In wilson cloud chamber, the air becomes saturated with:

Question # 2

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

Question # 3

Neutron was suggested to be in the nucleus by:

Question # 4

Radium was discovered by:

Question # 5

A pair of quark and antiquark makes a:

Question # 6

Beta particles are

Question # 7

The number of protons inside a nucleus is called

Question # 8

A mass spectrograph sort out

Question # 9

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

Question # 10

Nucleus consists of

Question # 11

Neutron was discovered in

Question # 12

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

Question # 13

The most abundant isotope of neon is

Question # 14

Proton was discovered by Rutherford in

Question # 15

The range ofβ-particle in air is greater than that ofα-particle by

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
2 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
3 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
4 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
5 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
6 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
7 The rate of decay of a radioactive substance
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time
8 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
9 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
10 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral

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