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

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ECAT Pre General Science Physics Chapter 21 Nuclear Physics

00:00
Question # 1

Neutron was discovered by

Question # 2

The amount of energy equivalent to 1 a.m.u is

Question # 3

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

Question # 4

Curie is a unit of

Question # 5

The total charge of any nucleus is given as

Question # 6

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

Question # 7

Three quarks make:

Question # 8

The figure 1.007276μ shows the mass of an:

Question # 9

The nucleus left after the emission of some radiation is called:

Question # 10

Fraction of the decaying atoms per unit time is called

Question # 11

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

Question # 12

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 13

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 14

The unit of decay constant is

Question # 15

Nucleus consists of

Question # 16

Which of the following material has smaller has life

Question # 17

Rutherford performed an experiment on nuclear reactions in:

Question # 18

When certain nucleus emits aβ-particles, is mass number:

Question # 19

Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called

Question # 20

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

Question # 21

Which are not the elementary particles?

Question # 22

Neutrons are

Question # 23

The reciprocal of decay constant λ of a radioactive material is:

Question # 24

A mass spectrograph sort out

Question # 25

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

Question # 26

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

Question # 27

The number of protons inside a nucleus is called

Question # 28

Radioactivity was discovered by

Question # 29

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

Question # 30

Marie curie and Pierre curie discovered:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
2 The range of particle depends upon the factor
A. charge, mass and energy of particle
B. density of medium
C. ionization potential of the atoms
D. all the above
3 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
4 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
5 The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
A. 3 more neutrons
B. 3 more electrons
C. 3 more protons
D. 3 more ions
6 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these
7 The unit of decay constant is:
A. Second
B. Metre
C. Hour
D. Year
8 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
9 A mass difference of 0.0012 u is equivalent to and energy of:
A. 0.5 Me V
B. 1.13 MeV
C. 5.13 MeV
D. 1.13 keV
10 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these

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