Q2 of 25 Page 137

A small bottle weighs 20 g when empty and 22 g when filled with water. When it is filled with oil it weighs 21.76 g. What is the density of oil?

Given that-

Weight of empty bottle = 20 g ,


And weight of water filled bottle = 22g


So the weight of water will be = 22-2 = 2g.


As we knew density of water = 1 g/cm3.


Then the volume of water will be = = 2/1 = 2 cm3


So capacity of bottle = 2cm3.


So the volume of oil which is filled in bottle is = 2cm3.


Also given that weight of bottle filled with oil = 21.76g.


Weight of oil will be = 21.76 - 20 = 1.76g


Then the density of oil = = 0.88 g/cm3


More from this chapter

All 25 →
1

A solid sphere has a radius of 2 cm and a mass of 0.05 kg. What is the relative density of the sphere?

 3

An ice cube floats on the surface of a glass of water (density of ice =0.9 g/cm3 ). When the ice melts will the water level in the glass rise?

 4

The volume of 50g of a substance is 20 cm3. If the density of water is 1g/cm3,will the substance sink or float when placed on the surface of water ? What will be the mass of water displaced by the substance?

 5

Find the pressure at a depth of 10m in water if the atmospheric pressure is 100kPa. [1Pa=1N/m2 ] [100kPa = 105Pa = 105N/m2 = 1 atm.]