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

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 # 2

Neutron was discovered by

Question # 3

For an atom having atomic number 'Z' and atomic weight 'A', the number of neutrons in the nucleous is

Question # 4

Charge on neutron is

Question # 5

In radio-active decay, the original element which disintegrate to another element is called

Question # 6

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 7

The number of protons inside a nucleus is called

Question # 8

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 9

Mass of neutron is

Question # 10

Pair production take place when energy ofγ-rays photon is

Question # 11

Rutherford performed an experiment on nuclear reactions in:

Question # 12

Binding energy per nucleus is

Question # 13

The energy acquired by a mass of 1g moving with the speed of light is

Question # 14

Neutron was suggested to be in the nucleus by:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 When a charged particle passes through matter, it produces ionization, this effect is used in
A. fission reaction
B. reactor
C. radiation detector
D. fusion reaction
2 Hydrogen atom with only one proton and one neutron in its nucleus, and one electron, is called
A. deuterium
B. protium
C. tritium
D. none of these
3 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
4 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
5 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
6 Mass of neutron is
A. 1.67 x 10-31kg
B. 1.67 x 10-27kg
C. 9.1 x 10-31kg
D. 1.67 x 10-19kg
7 Neutron was disvovered by:
A. Rutherford in 1920
B. Chadwick in 1922
C. Bohr in 1913
D. Compton in 1927
8 Fraction of the decaying atoms per unit time is called
A. decay atom
B. decay element
C. decay constant
D. decay
9 Neutrons are
A. positive charge
B. negatively charged
C. massless
D. neutral
10 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these

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