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 isotope/s of hydrogen is /are:

Question # 2

In 1932 Chadwick discovered

Question # 3

The total charge of any nucleus is given as

Question # 4

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

Question # 5

1 amu is equal to

Question # 6

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

Question # 7

Which of these is not a radiation detector

Question # 8

Radioactivity

Question # 9

Mass of neutron is

Question # 10

In wilson cloud chamber, the air becomes saturated with:

Question # 11

The reciprocal of decay constant λ of a radioactive material is:

Question # 12

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

Question # 13

How many isotopes of helium are present?

Question # 14

The rate of decay of a radioactive substance

Question # 15

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The rate of decay of a radioactive substance
A. decrease exponentially with time
B. decreases linearly with time
C. increases linearly with time
D. increases exponentially with time
2 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
3 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
4 The number of isotopes of hydrogen are
A. 2
B. 1
C. 3
D. 4
5 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
6 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
7 Nucleon means:
A. Only electrons
B. Only neutrons
C. Only protons
D. Both (A ) and (C)
8 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian
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 Heavy water is made of one oxygen atom and two atoms of:
A. Protium
B. Deuterium
C. Tritium
D. Any of these

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