Definition of relative density - Jamb Physics Past Questions and Answers

Question 6:

• JAMB 1994

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

A. 1.25
B. 1.10
C. 0.90
D. 0.80

Question 7:

• JAMB 1994

If a solid X floats in liquids P of relative density 2.0 and in liquid Q of relative density 1.5, it can be inferred that the

A. Weight of P displaced is greater than that of Q
B. Weight of P displaced is less than that of Q
C. Volume of P displaced is greater than that of Q
D. Volume of P displaced is less than that of Q

Question 8:

• JAMB 1997

An empty 60 litre petrol tank has a mass of 10kg. Its mass when full of fuel of relative density 0.72 is

A. 7.2kg
B. 33.2kg
C. 43.2kg
D. 53.2kg

Question 9:

• JAMB 1998

A solid of weight 0.600N is totally immersed in oil and water respectively. If the upthrust of oil is 0.210N and the relative density of oil is 0.875. Find the upthrust in water.

A. 0.600N
B. 0.360N
C. 0.240N
D. 0.180N

Question 10:

• JAMB 1999

A solid weigh 10 .00 N in air, 6 N when fully immersed in water and 7 . 0 N when fully immersed in a liquid X. Calculate the relative density of the liquid, X.

A. 5/3
B. 4/3
C. 3/4
D. 7/10