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

00:00
Question # 1

Radium was discovered by:

Question # 2

Charge on neutron is

Question # 3

Alfa particles are

Question # 4

The chemical behaviour of an atom is determined by

Question # 5

The diameter of an atom is of the order

Question # 6

The most abundant isotope of neon is

Question # 7

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

Question # 8

1 amu is equal to

Question # 9

The energy acquired by a mass of 1g moving with the speed of light is

Question # 10

Radioactivity is

Question # 11

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 12

Which of the following material has longer half life

Question # 13

The unit of decay constant is:

Question # 14

Mass of proton is of order of

Question # 15

The chemical properties of all the isotopes of an elements are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
2 The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
3 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
4 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
5 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
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 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
8 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
9 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
10 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these

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