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

Charge on proton is

Question # 2

The unit of decay constant is

Question # 3

Neutron was discovered by

Question # 4

Gamma rays consist of steam of

Question # 5

Proton was discovered by Rutherford in

Question # 6

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

Question # 7

The chemical properties of all the isotopes of an elements are

Question # 8

Mass of proton is of order of

Question # 9

Mass of neutron is

Question # 10

The chemical behaviour of an atom is determined by

Question # 11

Radioactivity was discovered by:

Question # 12

According to Rutherford atomic model, the positive charge in an atom

Question # 13

There is present in paraffin a large amount of:

Question # 14

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

Question # 15

The distance travelled byα-particle in a medium before coming to rest, is called

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
2 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
3 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas
4 After alpha decay the atomic number of the atom
A. increase by four
B. decreases by two
C. increases by two
D. decrease by four
5 Three quarks make:
A. An electron
B. A meson
C. A baryon
D. A photon
6 Neon gas have three isotopes whose atomic numbers are
A. 20, 24 , 23
B. 20, 21 , 22
C. 20, 19 , 21
D. none of these
7 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
8 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
9 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
10 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus

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