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

Neutron was disvovered by:

Question # 2

The range ofβ-particle in air is greater than that ofα-particle by

Question # 3

Neon gas have three isotopes whose atomic numbers are

Question # 4

Radiation detector are used to

Question # 5

Nucleus consists of

Question # 6

Beta particles are

Question # 7

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

Question # 8

Neutrons are

Question # 9

How many isotopes of helium are present?

Question # 10

A curie represents a very strong source of

Question # 11

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

Question # 12

The most abundant isotope of neon is

Question # 13

The half life of uranium-238 is

Question # 14

The emission of radiations take place in elements, having charge number greater than

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
2 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
3 For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
A. A - Z
B. A + Z
C. Z
D. A
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 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
6 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
7 The nucleus/nuclei of hydrogen is/are:
A. Proton
B. Deuteron
C. Triton
D. All of these
8 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
9 Radiation detector are used to
A. measure intensity of radiation
B. measure energy of radiation
C. difference between different types of radiation
D. all the above
10 In wilson cloud chamber, the air becomes saturated with:
A. Alcohol vapours
B. Water
C. Helium gas
D. Nitrogen gas

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