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

1 amu is equal to.

Question # 2

When a nucleus emits an alpha particles, its charge number decreases by

Question # 3

Which of the following material has longer half life

Question # 4

A particle having the mass of electron and charge of a proton is called a

Question # 5

For Protium, the mass defect is:

Question # 6

Mass of proton is of order of

Question # 7

Radioactivity is

Question # 8

Electrons are

Question # 9

The unit of decay constant is:

Question # 10

Alfa particles are

Question # 11

The most abundant isotope of neon is

Question # 12

Radioactivity

Question # 13

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

Question # 14

How much time, theα-particle more massive than an electron

Question # 15

γ-rays are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
2 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
3 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
4 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
5 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
6 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
7 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
8 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
9 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
10 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

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