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

Nuclei that have the same charge number but different mass number are called

Question # 2

Mass of neutron is

Question # 3

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

Question # 4

Radioactivity was discovered by

Question # 5

There is present in paraffin a large amount of:

Question # 6

The number of all the protons and neutrons in a nucleus is known as

Question # 7

Mass of proton is

Question # 8

The number of isotopes of hydrogen are

Question # 9

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

Question # 10

β-particles are easily deflected by collisions than heavy

Question # 11

A mass spectrograph sort out

Question # 12

The unit of decay constant is:

Question # 13

In wilson cloud chamber, the air becomes saturated with:

Question # 14

The half lie of radium-226 is

Question # 15

Charge on proton is

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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 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
3 The figure 1.007276μ shows the mass of an:
A. Atom
B. Positron
C. Electron
D. Neutron
4 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
5 Radioactivity is
A. self disruptive activity
B. spontaneous activity
C. exhibited by all elements under proper conditions
D. both 'a' and 'b'
6 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
7 Structure of the nucleus was explained by
A. J.J Thomson
B. Bohr
C. Millikan
D. Rutherford
8 A pair of quark and antiquark makes a:
A. Meson
B. Baryon
C. Proton
D. Neutron
9 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
10 Which of the following material has smaller has life
A. uranium
B. polonium
C. radium
D. radian

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