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

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

Question # 2

Curie is a unit of

Question # 3

The chemical behaviour of an atom is determined by

Question # 4

The nucleus/nuclei of hydrogen is/are:

Question # 5

Charge on neutron is

Question # 6

The most abundant isotope of neon is

Question # 7

Radioactivity was discovered by:

Question # 8

Nucleon means:

Question # 9

Radioactivity is

Question # 10

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 11

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

Question # 12

When certain nucleus emits aβ-particles, is mass number:

Question # 13

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 14

A mass spectrograph sort out

Question # 15

Fraction of the decaying atoms per unit time is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
2 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
3 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
4 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
5 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
6 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
7 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
8 When a nucleus emits an alpha particles, its charge number decreases by
A. 3
B. 2
C. 6
D. 5
9 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
10 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen

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