Practice Multiple Choice Questions

College Chemistry Multiple Choice Question Set 1

1. How many milligrams are in 0.2 decigrams?
	(a)	20 milligrams
	(b)	2000 milligrams
	(c)	0.002 milligram
	(d)	0.00002 milligram

2. What would be the volume in liters of 640 g of oil if the density of the oil is 0.8 g/mL?
	(a)	800 liters
	(b)	0.8 liter
	(c)	512 liters
	(d)	0.5 liters

3. Five 1 peseta coins from Spain were dropped into a graduated cylinder containing 20.20 mL of water. The volume of the water increased to 22.05 mL. A single coin had a mass of 0.99 gram. What is the identity of the metal used for the Spanish 1 peseta coins?
		density of aluminum = 2.7 g/mL
		density of zinc = 7.1 g/mL
		density of copper = 9.0 g/mL
		density of silver = 10.0 g/mL
	(a)	aluminum
	(b)	zinc
	(c)	copper
	(d)	silver

4. The mass of a metal cylinder was determined on an analytical balance to be 50.208 g. The volume of the cylinder was measured and determined to be 5.6 mL. The density of the metal cylinder, expressed to the proper number of significant figures, is...
	(a)	8.9657 g/mL
	(b)	9.0 g/mL
	(c)	0.11153 g/mL
	(d)	0.11 g/mL

5. Two students, Garrison and Isabella, determined the mass of an object on two different balances. The accepted mass of the object was 2.355 g. Garrison obtained values of 2.531 g, 2.537 g, 2.535 g and 2.533 g. Isabella obtained values of 2.350 g, 2.404 g, 2.296 g and 2.370 g. Which statement best describes the results that were obtained by Garrison and Isabella.
	(a)	Garrison obtained the better accuracy.
	(b)	Isabella obtained the better accuracy.
	(c)	Garrison obtained the better precision.
	(d)	Isabella obtained the better precision.

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