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

Question # 2

Neutrons are

Question # 3

An alpha particle has a charge of

Question # 4

γ-rays behave like a particle because they explain the

Question # 5

In 1932 Chadwick discovered

Question # 6

The number if neutrons in the nucleus of 92U235are

Question # 7

Radioactivity

Question # 8

The number of all the protons and neutrons in a nucleus is known as

Question # 9

The diameter of an atom is of the order

Question # 10

There is present in paraffin a large amount of:

Question # 11

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 12

Radioactivity was discovered by

Question # 13

Radioactivity is

Question # 14

The energy is found from Einstein's mass energy relation is called

Question # 15

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
2 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
3 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
4 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these
5 Binding energy per nucleus is
A. greater for heavy nucleus
B. least for heavy nucleus
C. greatest for light nuclei
D. decreases for medium weight niclei
6 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
7 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
8 For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is
A. A - Z
B. A
C. Z
D. A + Z
9 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
10 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A

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