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

The time required for a radioactive material to decrease in active by one half is called

Question # 2

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

Question # 3

Structure of the nucleus was explained by

Question # 4

A pair of quark and antiquark makes a:

Question # 5

Neutron was suggested to be in the nucleus by:

Question # 6

The figure 1.007276μ shows the mass of an:

Question # 7

Mass of proton is of order of

Question # 8

Nucleus of a hydrogen atom may contain:

Question # 9

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

Question # 10

Radioactivity was discovered by

Question # 11

A mass spectrograph sort out

Question # 12

Marie curie and Pierre curie discovered:

Question # 13

The chemical properties of all the isotopes of an elements are

Question # 14

Binding energy per nucleus is

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
2 The missing mass which is converted to energy in the formation of nucleus, is called
A. packing fraction
B. mass defect
C. binding energy
D. none of these
3 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
4 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
5 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
6 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
7 Radioactivity
A. is exhibited more by semiconductors in general
B. in exhibited more by the element when they are coupled
C. with other radioactive elements by a covalent bond
D. is an atomic property of radioactive elements
8 γ-rays behave like a particle because they explain the
A. Compton effect
B. Photoelectric effect
C. Pair-production
D. all the above
9 The number of protons inside a nucleus is called
A. mass number
B. atomic weight
C. atomic number
D. none of these
10 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

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