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

Fraction of the decaying atoms per unit time is called

Question # 2

The number of protons inside a nucleus is called

Question # 3

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 4

There is present in paraffin a large amount of:

Question # 5

A particle having the mass of electron and charge of a proton is called a

Question # 6

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

Question # 7

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

Question # 8

The chemical properties of an element depends upon the number of

Question # 9

Phenomenon of radioactivity is due to disintegration of

Question # 10

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

Question # 11

Radioactivity is

Question # 12

When a nucleus emits an alpha particles, its charge number decreases by

Question # 13

The number if neutrons in the nucleus of 92U235are

Question # 14

Which of the following material has smaller has life

Question # 15

Mass of neutron is

Question # 16

The range of particle depends upon the factor

Question # 17

1 amu is equal to.

Question # 18

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 # 19

The nucleus left after the emission of some radiation is called:

Question # 20

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

Question # 21

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

Question # 22

Mass of proton is

Question # 23

Different radioactive material have

Question # 24

Charge on neutron is

Question # 25

The emission of radiations take place in elements, having charge number greater than

Question # 26

After alpha decay the atomic number of the atom

Question # 27

The counter, which also provides the power to the G.M. tube is called:

Question # 28

According to Rutherford atomic model, the positive charge in an atom

Question # 29

When a nucleus emits an alpha particle, it atomic mass decreased by

Question # 30

Binding energy per nucleus is

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 For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
A. A - Z
B. A + Z
C. Z
D. A
2 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg
3 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
4 The energy acquired by a mass of 1g moving with the speed of light is
A. 3 x 108J
B. 9 x 1013J
C. 3 x 1013J
D. 9 x 1016J
5 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
6 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
7 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
8 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
9 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
10 The distance travelled byα-particle in a medium before coming to rest, is called
A. range ofγ-particle
B. range of neutrons
C. range of particle
D. none of these

Test Questions