ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Question # 1

Gamma rays consist of steam of

Question # 2

Proton was discovered by Rutherford in

Question # 3

The diameter of an atom is of the order

Question # 4

A pair of quark and antiquark makes a:

Question # 5

Radioactivity was discovered by

Question # 6

The figure 1.007276μ shows the mass of an:

Question # 7

The unit of decay constant is

Question # 8

Marie curie and Pierre curie discovered:

Question # 9

Charge on neutron is

Question # 10

The chemical behaviour of an atom is determined by

Question # 11

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

Question # 12

The unit of decay constant is:

Question # 13

The chemical properties of an element depends upon the number of

Question # 14

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 15

Neon gas have three isotopes whose atomic numbers are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
2 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
3 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
4 1 amu is equal to.
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-24kg
D. 1.66 x 10-27kg
5 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
6 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
7 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
8 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
9 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
10 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only

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