ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

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

Try The 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

The number of protons inside a nucleus is called

Question # 2

Gamma rays consist of steam of

Question # 3

Radioactivity was discovered by:

Question # 4

Rate of decay is actually described by.

Question # 5

Which are not the elementary particles?

Question # 6

In 1932 Chadwick discovered

Question # 7

Neon gas have three isotopes whose atomic numbers are

Question # 8

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

Question # 9

Which of the following material has smaller has life

Question # 10

An alpha particle has a charge of

Question # 11

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

Question # 12

The most abundant isotope of neon is

Question # 13

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 14

There is present in paraffin a large amount of:

Question # 15

The rate of decay of radioactive substance

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The unit of decay constant is
A. sex
B. sec2
C. sec-1
D. sec-2
2 Which of the following material has longer half life
A. radium
B. polonium
C. radium
D. uranium
3 Radioactivity was discovered by
A. Rutherford
B. Henri Becqureal
C. Maxwell
D. James Chadwick
4 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
5 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
6 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
7 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
8 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
9 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
10 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932

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