ECAT Pre Engineering Physics Chapter 21 online mcq test with answers for chapter 21 (Nuclear Physics)

Physics ECAT Pre Engineering Chapter 21 Nuclear Physics Physics Online Test

Sr. #	Questions	Answers Choice
1	Three quarks make:	An electron A meson A baryon A photon None of these
2	A pair of quark and antiquark makes a:	Meson Baryon Proton Neutron None of these
3	Which are not the elementary particles?	Photons Leptons Hadrons Quarks None of these
4	U-238 present in the natural uranium is about:	59% 0.007% 99% 39% 19%
5	Heavy water is made of one oxygen atom and two atoms of:	Protium Deuterium Tritium Any of these None of these
6	Examples of moderators used in a fission reactor is/are:	Water Heavy water Carbon Hydrocarbon All of these
7	There is present in paraffin a large amount of:	Nitrogen Hydrogen Carbon Baryllium Lithium
8	A mass difference of 0.0012 u is equivalent to and energy of:	0.5 Me V 1.13 MeV 5.13 MeV 1.13 keV 1.13 eV
9	In his experiment on nuclear reactions, Rutherford bombardedα particles on:	Nitrogen Hydrogen Lead Oxygen Krypton
10	Rutherford performed an experiment on nuclear reactions in:	1718 A.D 1818 A.D 1918 A.D 2001 A.D. 1701 A.D.
11	The counter, which also provides the power to the G.M. tube is called:	Thin mica window thin glass window Airy window Wooden window None of these
12	In wilson cloud chamber, the air becomes saturated with:	Alcohol vapours Water Helium gas Nitrogen gas None of these
13	The unit of decay constant is:	Second Metre Hour Year Second<sup>-1</sup>
14	The reciprocal of decay constant λ of a radioactive material is:	Frequency Half life Year Mean life None of these
15	Rate of decay is actually described by.	Half line Decay constant Mean life Total life None of these

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