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

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

Question # 2

The nucleus/nuclei of hydrogen is/are:

Question # 3

For Protium, the mass defect is:

Question # 4

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

Question # 5

There is present in paraffin a large amount of:

Question # 6

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

Question # 7

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

Question # 8

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 9

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

Question # 10

When a nucleus emits an alpha particles, its charge number decreases by

Question # 11

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

Question # 12

Radioactivity is

Question # 13

The amount of energy equivalent to 1 a.m.u is

Question # 14

According to Rutherford atomic model, the positive charge in an atom

Question # 15

Neutron was disvovered by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
2 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium
3 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
4 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
5 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
6 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
7 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
8 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
9 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
10 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass

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