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

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

Question # 2

The diameter of an atom is of the order

Question # 3

Which of the following material has longer half life

Question # 4

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

Question # 5

In wilson cloud chamber, the air becomes saturated with:

Question # 6

The chemical properties of all the isotopes of an elements are

Question # 7

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

Question # 8

γ-rays behave like a particle because they explain the

Question # 9

Different radioactive material have

Question # 10

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

Question # 11

Structure of the nucleus was explained by

Question # 12

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

Question # 13

The nucleus/nuclei of hydrogen is/are:

Question # 14

When thorium nucleus emits aβ-particle, the daughter nucleus is 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 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
2 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
3 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
4 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
5 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
6 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
7 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
8 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
9 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
10 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C

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