ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 21 Nuclear Physics MCQ`s Test

Sr.#	Question	Answer
1	Which of these is not a radiation detector	A. Wilson cloud chamber B. cyclotron acceleration C. Geiger Miller counter D. solid state detector
2	When thorium nucleus emits aβ-particle, the daughter nucleus is called:	A. Protactinium B. Actinium C. Uranium D. Radium
3	Which of the following material has smaller has life	A. uranium B. polonium C. radium D. radian
4	Referring to the above figure, we can say that of all the elements, the most stable element is	A. Phosphours B. Iron C. uranium D. Lithium
5	During the nuclear changes, the law/s of conservation that hold/s are that of:	A. Charge B. energy C. Momentum D. Mass
6	The unit of decay constant is:	A. Second B. Metre C. Hour D. Year
7	After alpha decay the atomic number of the atom	A. increase by four B. decreases by two C. increases by two D. decrease by four
8	γ-rays are	A. electrostatic waves B. electromagnetic waves C. heavy particles D. longitudinal waves
9	The time required for a radioactive material to decrease in active by one half is called	A. half time B. half life C. disintegration time D. mean life
10	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