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 time required for a radioactive material to decrease in active by one half is called

Question # 2

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

Question # 3

Nucleus consists of

Question # 4

Phenomenon of radioactivity is due to disintegration of

Question # 5

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

Question # 6

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

Question # 7

Pair production take place when energy ofγ-rays photon is

Question # 8

Radioactivity was discovered by

Question # 9

γ-rays behave like a particle because they explain the

Question # 10

The range of particle depends upon the factor

Question # 11

Structure of the nucleus was explained by

Question # 12

The most abundant isotope of neon is

Question # 13

In 1932 Chadwick discovered

Question # 14

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 15

Nucleon means:

Question # 16

Radiation detector are used to

Question # 17

When certain nucleus emits anα particle, its mass number:

Question # 18

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

Question # 19

The energy acquired by a mass of 1g moving with the speed of light is

Question # 20

Charge on proton is

Question # 21

How much time, theα-particle more massive than an electron

Question # 22

1 amu is equal to

Question # 23

The figure 1.007276μ shows the mass of an:

Question # 24

Mass of proton is of order of

Question # 25

Which of the following material has longer half life

Question # 26

A pair of quark and antiquark makes a:

Question # 27

There is present in paraffin a large amount of:

Question # 28

Curie is a unit of

Question # 29

In wilson cloud chamber, the air becomes saturated with:

Question # 30

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

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 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
2 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
3 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
4 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these
5 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
6 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
7 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
8 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
9 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
10 Pair production take place when energy ofγ-rays photon is
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these

Test Questions