ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

00:00
Question # 1

Mass of proton is

Question # 2

Marie curie and Pierre curie discovered:

Question # 3

Rutherford performed an experiment on nuclear reactions in:

Question # 4

Radioactivity

Question # 5

Charge on neutron is

Question # 6

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

Question # 7

Nucleus of a hydrogen atom may contain:

Question # 8

The half life of uranium-238 is

Question # 9

The range of particle depends upon the factor

Question # 10

The chemical properties of an element depends upon the number of

Question # 11

Which of the following material has longer half life

Question # 12

The rate of decay of a radioactive substance

Question # 13

Three quarks make:

Question # 14

The reciprocal of decay constant λ of a radioactive material is:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
2 How much time, theα-particle more massive than an electron
A. 600
B. 7000
C. 5000
D. 15000
3 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
4 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
5 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
6 The rate of decay of radioactive substance
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time
7 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
8 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
9 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
10 The range ofβ-particle in air is greater than that ofα-particle by
A. 1000 times
B. 100 times
C. 15 times
D. 10 times

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