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

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

Question # 2

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 3

Nucleon means:

Question # 4

The nucleus left after the emission of some radiation is called:

Question # 5

Mass of proton is of order of

Question # 6

γ-rays are

Question # 7

Radioactivity

Question # 8

Radium was discovered by:

Question # 9

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

Question # 10

A pair of quark and antiquark makes a:

Question # 11

The half lie of radium-226 is

Question # 12

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

Question # 13

Marie curie and Pierre curie discovered:

Question # 14

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

Question # 15

The nuclei of an element having the same charge number but different mass numbers are called:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The isotope/s of hydrogen is /are:
A. Protium
B. Deuterium
C. Tritium
D. Both (A) and (B)
2 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
3 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
4 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
5 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
6 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
7 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
8 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
9 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
10 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4

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