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	When thorium nucleus emits aβ-particle, the daughter nucleus is called:	Protactinium Actinium Uranium Radium Redon
2	When certain nucleus emits aβ-particles, is mass number:	Remain same Increases by one Decreases by one Decreases by four None of these
3	When certain nucleus emits anα particle, its mass number:	Increases by one Decreases by one Remain same Decreases by four None of these
4	During the nuclear changes, the law/s of conservation that hold/s are that of:	Charge energy Momentum Mass All of these
5	The nucleus left after the emission of some radiation is called:	Parent nucleus Daughter necleus Mother necleus Any of these None of these
6	Marie curie and Pierre curie discovered:	Uranium Polonium Radium Both (A) and (C) Plutonium
7	Radium was discovered by:	Becquerel Marie curie Pierre curie Rutherford Both (B) and (C)
8	Radioactivity was discovered by:	Becquerel Marie curie Pierre curie All of them None of these
9	Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:	50 100 150 200 250
10	Referring to the above figure, we can say that of all the elements, the most stable element is	Phosphours Iron uranium Lithium Bismuth
11	For Protium, the mass defect is:	Infinite Zero Very large A few grams None of these
12	The nucleus/nuclei of hydrogen is/are:	Proton Deuteron Triton All of these None of these
13	The isotope/s of hydrogen is /are:	Protium Deuterium Tritium Both (A) and (B) All of these
14	The nuclei of an element having the same charge number but different mass numbers are called:	Isobars Isotopes Isomers Isobaric Isothermal
15	Nucleus of a hydrogen atom may contain:	One neutron only Two protons and one neutron Two protons and two neutrons Aany of above One proton only

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