Radio activation

11.	what are γ rays
	A. charged rays from outer space
	B. uncharged high-energy rays from outer space
	C. high-energy rays emitted by radioactive substances
	D. uncharged particles emitted by radioactive substances Option”C” is correct

12.	Which of the following rays has the maximum velocity
	A. α ray
	B. β ray
	C. γ ray
	D. None of these Option”C” is correct

13.	Which of the following rays has the least ionizing potential?
	A. α ray
	B. β ray
	C. γ ray
	D. None of these Option”C” is correct

14.	Which of the following rays has the highest ionization potential?
	A. α ray
	B. β ray
	C. γ ray
	D. None of these Option”A” is correct

15.	What do all radioactive substances turn into in the final form after decay?
	A. corundum
	B. lead
	C. cadmium
	D. such as Option”B” is correct

16.	Which is the minimum transmission power ray?
	A. α ray
	B. X-ray
	C. γ ray
	D. β ray Option”A” is correct

17.	Which radioactive element is named after the country of its discoverer?
	A. radium
	B. uranium
	C. polonium
	D. palladium Option”C” is correct

18.	Which of the following is not a radioactive substance
	A. uranium
	B. thorium
	C. aluminium
	D. polonium Option”C” is correct

19.	Which of the following is used to detect neutrons to control the chain reaction during nuclear fission?
	A. Boron
	B. heavy water
	C. uranium
	D. plutonium Option”A” is correct

20.	Which of the following is not a radioactive element
	A. astatine
	B. Francium
	C. tritium
	D. zirconium Option”D” is correct

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