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

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 2

The figure 1.007276μ shows the mass of an:

Question # 3

The most abundant isotope of neon is

Question # 4

Binding energy per nucleus is

Question # 5

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

Question # 6

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

Question # 7

Nucleon means:

Question # 8

The isotope/s of hydrogen is /are:

Question # 9

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

Question # 10

Nucleus of a hydrogen atom may contain:

Question # 11

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

Question # 12

β-particles are easily deflected by collisions than heavy

Question # 13

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 14

Nuclei that have the same charge number but different mass number are called

Question # 15

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
2 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
3 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
4 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
5 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
6 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
7 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
8 The diameter of an atom is of the order
A. 10-125m
B. 10-11m
C. 10-10m
D. 10-9m
9 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
10 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford

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