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

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

Three quarks make:

Question # 2

The half lie of radium-226 is

Question # 3

In wilson cloud chamber, the air becomes saturated with:

Question # 4

U-238 present in the natural uranium is about:

Question # 5

Radioactivity is

Question # 6

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 7

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

Question # 8

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

Question # 9

Mass of proton is of order of

Question # 10

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

Question # 11

In 1932 Chadwick discovered

Question # 12

Radioactivity

Question # 13

Nucleus of a hydrogen atom may contain:

Question # 14

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Question # 15

Neutron was suggested to be in the nucleus by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
3 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
4 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
5 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
6 The number of all the protons and neutrons in a nucleus is known as
A. atomic number
B. mass number
C. charge number
D. none of these
7 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
8 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino
9 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
10 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes

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