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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.

Hot air is less dense than cold air.

  True

  False

 

2.

Which of these has the lowest density?

  Aluminum

  Water

  Cork

  Glass

  Half-n-half Clue
 

3.

One kg of air is compressed from 1 m3 to 0.5 m3. Which of the following statements is true?

  The density is halved.

  The density is doubled.

  The mass is halved.

  The mass is doubled.

  Half-n-half Clue
 

4.

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

  130

  1300

  0.013

  0.0013

  Half-n-half Clue
 

5.

A metal body of mass 58.2 g occupies a volume of 3 cm3. Identify the metal.

  Tungsten with density = 19.4 g/cm3

  Lead with density = 11.4 g/cm3

  Aluminum with density = 2.7 g/cm3

  Iron with density = 7.9 g/cm3

  Half-n-half Clue
 

6.

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

  Liquids L1 and L2 have the same density.

  Liquid L1 has a lower density than liquid L2.

  Liquid L1 has a higher density than liquid L2.

  No definite conclusion can be made about the liquid densities.

  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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