Chapter 15 Multiple Choice Quiz 1

Please answer all questions


1	This type of radiation is released when decays to
		A)	alpha
		B)	beta
		C)	gamma
		D)	all of these


2	Which of the following correctly balances this decay reaction?
		A)
		B)
		C)
		D)


3	Which of the following correctly balances this nuclear fission reaction?
		A)
		B)
		C)
		D)


4	Isotope A has a half-life measured in minutes, whereas isotope B has a half-life of millions of years. Which is more radioactive?
		A)	isotope A
		B)	isotope B
		C)	Both are equally dangerous.
		D)	It depends on the sample size.


5	The decay rate of a radioactive isotope can be increased by increasing the
		A)	temperature
		B)	pressure
		C)	size of the sample
		D)	none of these


6	The protons in a nucleus stay together due to the
		A)	electrostatic force of attraction
		B)	nuclear force
		C)	gravitational force
		D)	binding force


7	A measure of radiation that takes into account the possible biological damage produced by different types of radiation is called a
		A)	rem
		B)	rad
		C)	roentgen
		D)	curie


8	The radioactive isotope Z has a half-life of 12 hours. After 2 days, the fraction of the original amount remaining is
		A)	1/2
		B)	1/4
		C)	1/8
		D)	1/16


9	The isotope is most likely to emit
		A)	an alpha particle.
		B)	a beta particle.
		C)	a gamma ray.
		D)	It is not possible to predict.


10	When an isotope releases gamma radiation the atomic number
		A)	decreases by two and the mass number decreases by four.
		B)	increases by one and the mass number remains the same.
		C)	and the mass number decrease by one.
		D)	and the mass number remain the same.

2002 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.