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Physics Quiz : Density


Answer the following questions based on density.

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Multiple choice

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1.

An object floats in liquid L1, but it sinks to the bottom in liquid L2. Which statement of the following is true?

  Liquid L1 has a higher density than liquid L2.

  Liquid L1 has a lower density than liquid L2.

  No definite conclusion can be made about the liquid densities.

  Liquids L1 and L2 have the same density.

  Half-n-half Clue
 

2.

Density is defined as

  mass / volume

  mass × acceleration

  mass × volume

  volume / mass

  Half-n-half Clue
 

3.

A metal body of mass 243 g occupies a volume of 90 cm3. Identify the metal.

  Lead with density = 11.4 g/cm3

  Aluminum with density = 2.7 g/cm3

  Tungsten with density = 19.4 g/cm3

  Iron with density = 7.9 g/cm3

  Half-n-half Clue
 

4.

The SI unit of density is

  g/cm3

  kg/m3

  cm3/g

  m3/kg

  Half-n-half Clue
 

5.

The density of oxygen at room temperature is about 1.3 kg/m3. Therefore, its density in g/cm3 is

  0.0013

  0.013

  1300

  130

  Half-n-half Clue
 

6.

The density of water at room temperature is about

  0.01 g/cm3

  1 g/cm3

  0.1 g/cm3

  10 g/cm3

  Half-n-half Clue
 

7.

The density of air is about 1 g/cm3 at room temperature and atmospheric pressure.

  True

  False

 


 
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