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

Which of the following material has smaller has life

Question # 2

Which are not the elementary particles?

Question # 3

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

Question # 4

The unit of decay constant is:

Question # 5

A curie represents a very strong source of

Question # 6

Mass of neutron is

Question # 7

Nucleus consists of

Question # 8

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

Question # 9

During the nuclear changes, the law/s of conservation that hold/s are that of:

Question # 10

A pair of quark and antiquark makes a:

Question # 11

Radioactivity was discovered by:

Question # 12

A mass spectrograph sort out

Question # 13

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 14

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

Question # 15

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

Question # 16

Charge on neutron is

Question # 17

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

Question # 18

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 19

Beta particles are

Question # 20

In wilson cloud chamber, the air becomes saturated with:

Question # 21

The number of protons inside a nucleus is called

Question # 22

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

Question # 23

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

Question # 24

In radio-active decay, the original element which disintegrate to another element is called

Question # 25

The figure 1.007276μ shows the mass of an:

Question # 26

The chemical behaviour of an atom is determined by

Question # 27

Examples of moderators used in a fission reactor is/are:

Question # 28

Gamma rays consist of steam of

Question # 29

How many isotopes of helium are present?

Question # 30

When a charged particle passes through matter, it produces ionization, this effect is used in

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 A curie represents a very strong source of
A. α-particle
B. β-particle
C. γ-particle
D. none of these
3 After alpha decay the atomic number of the atom
A. increase by four
B. decreases by two
C. increases by two
D. decrease by four
4 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
5 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze
6 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
7 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
8 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
9 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
10 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

Test Questions

Is this page helpful?