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

Marie curie and Pierre curie discovered:

Question # 2

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

Question # 3

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

Question # 4

The half lie of radium-226 is

Question # 5

Neutron was disvovered by:

Question # 6

The counter, which also provides the power to the G.M. tube is called:

Question # 7

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

Question # 8

Radioactivity was discovered by

Question # 9

A pair of quark and antiquark makes a:

Question # 10

A curie represents a very strong source of

Question # 11

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

Question # 12

There is present in paraffin a large amount of:

Question # 13

For Protium, the mass defect is:

Question # 14

The chemical properties of all the isotopes of an elements are

Question # 15

The diameter of an atom is of the order

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
2 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
3 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
4 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
5 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
6 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
7 The penetration power ofβ-particle is
A. zero
B. less thanα-particle
C. equal toα-particle
D. greater thanα-particle
8 Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called
A. deuteron
B. deterium
C. protium
D. tritium
9 The half lie of radium-226 is
A. 238 years
B. 4.5 x 109days
C. 1620 years
D. 332 years
10 In radioactive decay, the new element which is formed due to the disintegration of original element is called
A. element
B. daughter element
C. parent element
D. none of these

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