Density describes
a. mass per unit volume.
b. length per unit time.
c. volume per liter.
d. weight per mass.
[Ques. 2] Which of the following quantities expressed in derived units includes the unit of length?
a. Area
b. Volume
c. Speed
d. Density
e. All of these
[Ques. 3] A metric ton (or tonne) is
a. the same as a British ton.
b. not defined.
c. a mass unit.
d. a weight unit.
[Ques. 4] A derived unit
a. involves only length.
b. is a combination of units.
c. applies only to density.
d. is not found in the metric system.
[Ques. 5] What is the mass of 25 cm3 of pure water?
a. None of these
b. 25 kg
c. 25 g
d. 25 mL
[Ques. 6] The International System of Units (SI) has ______________ base units.
a. four
b. six
c. seven
d. five
[Ques. 7] Which of the following is not a derived quantity?
a. Volume
b. Speed
c. Mass
d. Density
[Ques. 8] A hydrometer is used to measure
a. the time for an object to sink.
b. water (hydro).
c. the volume of a quantity of water.
d. liquid density.
[Ques. 9] In buying a product, a shopper has a choice of the following amounts, all at the same price. Which is the best buy?
a. 432 cc
b. 1 pint
c. 1 half-liter
d. 450 mL
[Ques. 10] An object transported from Earth's surface to the surface of the Moon has
a. the same mass, but different weight.
b. the same weight, but different mass.
c. the same mass and the same weight.
d. different mass and different weight.
e. none of these.
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