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

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

Question # 3

The half life of uranium-238 is

Question # 4

In radio-active decay, the original element which disintegrate to another element is called

Question # 5

The chemical behaviour of an atom is determined by

Question # 6

Neutron was discovered in

Question # 7

Radioactivity was discovered by:

Question # 8

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

Question # 9

In 1932 Chadwick discovered

Question # 10

Curie is a unit of

Question # 11

Proton was discovered by Rutherford in

Question # 12

Marie curie and Pierre curie discovered:

Question # 13

The time required for a radioactive material to decrease in active by one half is called

Question # 14

1 amu is equal to

Question # 15

β-particles are easily deflected by collisions than heavy

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
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 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
4 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
5 Mass of proton is of order of
A. 10-31gm
B. 10-27kg
C. 10-24gm
D. 10+27kg
6 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
7 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
8 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
9 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
10 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23

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