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

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 # 2

The number of protons inside a nucleus is called

Question # 3

The number if neutrons in the nucleus of 92U235are

Question # 4

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 5

Radioactivity was discovered by:

Question # 6

After alpha decay the atomic number of the atom

Question # 7

The emission of radiations take place in elements, having charge number greater than

Question # 8

γ-rays behave like a particle because they explain the

Question # 9

The chemical properties of all the isotopes of an elements are

Question # 10

A mass spectrograph sort out

Question # 11

The most abundant isotope of neon is

Question # 12

Rutherford performed an experiment on nuclear reactions in:

Question # 13

Radioactivity is

Question # 14

1 amu is equal to.

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 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
2 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
3 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
4 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
5 Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:
A. 50
B. 100
C. 150
D. 200
6 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
7 The emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
8 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
9 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
10 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932

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