ECAT Pre General Science Physics Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 21 Nuclear Physics

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Pre General Science Physics Chapter 21 Nuclear Physics

00:00
Question # 1

The penetration power ofβ-particle is

Question # 2

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 3

Heavy water is made of one oxygen atom and two atoms of:

Question # 4

Rutherford performed an experiment on nuclear reactions in:

Question # 5

Which of the following material has longer half life

Question # 6

The rate of decay of a radioactive substance

Question # 7

Neutron was disvovered by:

Question # 8

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 9

U-238 present in the natural uranium is about:

Question # 10

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

Question # 11

The missing mass which is converted to energy in the formation of nucleus, is called

Question # 12

For Protium, the mass defect is:

Question # 13

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 14

Mass of proton is of order of

Question # 15

In 1932 Chadwick discovered

Question # 16

Rate of decay is actually described by.

Question # 17

1 amu is equal to

Question # 18

Alfa particles are

Question # 19

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 20

Mass of proton is

Question # 21

How many isotopes of helium are present?

Question # 22

Nucleon means:

Question # 23

The chemical properties of all the isotopes of an elements are

Question # 24

Binding energy per nucleus is

Question # 25

Different radioactive material have

Question # 26

The distance travelled byα-particle in a medium before coming to rest, is called

Question # 27

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

Question # 28

Radioactivity was discovered by

Question # 29

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 30

The isotope/s of hydrogen is /are:

Submit

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 21 Nuclear Physics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Pre General Science Physics Chapter 21 Nuclear Physics MCQ`s Test

  • L
    LAVANYA 31 - May - 2018 04 Min 45 Sec 110/120
  • U
    Ukasha Rana 29 - Apr - 2022 10 Min 50 Sec 100/120
  • G
    Gorak Danda 24 - Jun - 2024 08 Min 03 Sec 80/120
  • H
    haseeb 12 - Sep - 2021 07 Min 18 Sec 65/120
  • C
    Ch Iftihar 25 - Jan - 2022 07 Min 34 Sec 65/120
  • A
    Aleem Tahir 20 - Apr - 2021 10 Min 50 Sec 65/120
  • H
    Hamza Mukhtair 14 - Jul - 2022 06 Min 35 Sec 50/120
  • I
    ifrah Sheerazi 24 - Jun - 2021 10 Min 50 Sec 50/120
  • U
    umar 12 - Aug - 2021 10 Min 50 Sec 45/120
  • N
    Neha Khan 02 - Dec - 2021 10 Min 50 Sec 40/120
  • F
    Faisal Mehrban 22 - Jun - 2021 10 Min 50 Sec 40/120
  • S
    Sýèd Zàhàd 24 - Jun - 2022 10 Min 50 Sec 30/120
  • S
    Sami Saleem 23 - May - 2023 10 Min 50 Sec 25/120
  • F
    Faraz Ahmad 06 - May - 2021 10 Min 50 Sec 15/120
  • M
    Malik Farhan 23 - May - 2021 07 Min 32 Sec 10/120

ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
2 The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
A. 3 more neutrons
B. 3 more electrons
C. 3 more protons
D. 3 more ions
3 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
4 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
5 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
6 The half life of uranium-238 is
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
7 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
8 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
9 Nucleus of a hydrogen atom may contain:
A. One neutron only
B. Two protons and one neutron
C. Two protons and two neutrons
D. Aany of above
10 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these

Test Questions