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 most abundant isotope of neon is

Question # 2

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

Question # 3

Nucleus consists of

Question # 4

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

Question # 5

U-238 present in the natural uranium is about:

Question # 6

Structure of the nucleus was explained by

Question # 7

1 amu is equal to

Question # 8

Which are not the elementary particles?

Question # 9

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

Question # 10

The half life of radioactive substances depends upon

Question # 11

Alfa particles are

Question # 12

The range ofβ-particle in air is greater than that ofα-particle by

Question # 13

1 amu is equal to.

Question # 14

A mass spectrograph sort out

Question # 15

How many isotopes of helium are present?

Question # 16

Fraction of the decaying atoms per unit time is called

Question # 17

The isotope/s of hydrogen is /are:

Question # 18

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

Question # 19

Neutron was discovered in

Question # 20

Radioactivity was discovered by:

Question # 21

Neutron was suggested to be in the nucleus by:

Question # 22

Gamma rays consist of steam of

Question # 23

Mass of neutron is

Question # 24

Radiation detector are used to

Question # 25

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

Question # 26

The penetration power ofβ-particle is

Question # 27

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

Question # 28

Binding energy per nucleus is

Question # 29

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

Question # 30

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

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 emission of radiations take place in elements, having charge number greater than
A. 109
B. 82
C. 69
D. 52
2 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
3 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
4 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
5 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
6 Radioactivity was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. All of them
7 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
8 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
9 If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
A. -4
B. 4
C. 2
D. 1
10 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life

Test Questions