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JAMB Physics 1994 Question 18

Question 18

Density and Upthrust

The mass of a specific gravity bottle is 15.2g when it is empty. It is 24.8g when filled with kerosene and 27.2g when filled with distilled water. Calculate the relative density of kerosene

  1. A.1.25
  2. B.1.10
  3. C.0.90
  4. D.0.80
Show the answer and explanation

Answer: D (0.80)

Explanation

Mass of kerosene = 24.8 − 15.2 = 9.6 g; mass of the same volume of water = 27.2 − 15.2 = 12.0 g. R.D. = 9.6/12.0 = 0.80.