ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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

  • Total Questions15

  • Time Allowed20

ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

1 amu is equal to

Question # 2

Radioactivity was discovered by

Question # 3

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

Question # 4

The range of particle depends upon the factor

Question # 5

Alfa particles are

Question # 6

Rate of decay is actually described by.

Question # 7

The number of protons inside a nucleus is called

Question # 8

The most abundant isotope of neon is

Question # 9

Mass of proton is

Question # 10

Neutron was disvovered by:

Question # 11

A pair of quark and antiquark makes a:

Question # 12

The chemical properties of an element depends upon the number of

Question # 13

β-particles are easily deflected by collisions than heavy

Question # 14

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

Question # 15

The total charge of any nucleus is given as

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
2 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
3 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
4 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
5 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
6 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
7 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
8 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
9 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
10 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'

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