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

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

Question # 2

The nucleus/nuclei of hydrogen is/are:

Question # 3

Alfa particles are

Question # 4

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 5

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

Question # 6

The half lie of radium-226 is

Question # 7

For Protium, the mass defect is:

Question # 8

Radium was discovered by:

Question # 9

The chemical properties of an element depends upon the number of

Question # 10

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

Question # 11

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

Question # 12

The half life of radioactive substances depends upon

Question # 13

Neutron was discovered by

Question # 14

The total charge of any nucleus is given as

Question # 15

Three quarks make:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 In 1932 Chadwick discovered
A. proton
B. neutron
C. photon
D. electron
2 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
3 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
4 In his experiment on nuclear reactions, Rutherford bombardedα particles on:
A. Nitrogen
B. Hydrogen
C. Lead
D. Oxygen
5 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
6 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
7 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
8 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
9 The chemical properties of an element depends upon the number of
A. electron
B. position
C. photons
D. neutrons
10 Referring to the above figure, we can say that of all the elements, the most stable element is
A. Phosphours
B. Iron
C. uranium
D. Lithium

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