ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

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

Try The 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

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

Question # 2

The diameter of an atom is of the order

Question # 3

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

Question # 4

If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by

Question # 5

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 6

The chemical properties of an element depends upon the number of

Question # 7

Neutron was suggested to be in the nucleus by:

Question # 8

Mass of proton is

Question # 9

γ-rays are

Question # 10

The half life of uranium-238 is

Question # 11

The chemical properties of all the isotopes of an elements are

Question # 12

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

Question # 13

A particle having the mass of electron and charge of a proton is called a

Question # 14

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

Question # 15

A pair of quark and antiquark makes a:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 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
2 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
3 The counter, which also provides the power to the G.M. tube is called:
A. Thin mica window
B. thin glass window
C. Airy window
D. Wooden window
4 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
5 The nuclei of an element having the same charge number but different mass numbers are called:
A. Isobars
B. Isotopes
C. Isomers
D. Isobaric
6 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
7 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
8 Alfa , beta and gamma rays are emitted from a radio-active substance
A. spontaneously
B. when it is heated
C. when it is exposed to light
D. When it interacts with the other particle
9 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
10 A particle having the mass of electron and charge of a proton is called a
A. photon
B. position
C. antiproton
D. antineutrino

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