Determination of density of solids and liquids - Jamb Physics Past Questions and Answers

Question 6:

• JAMB 1993

An object of mass 400g and density 600kgm^-3 is suspended with a sting so that half of it is immersed in paraffin of density 900kgm^-3. The tension in the string is

A. 1.0N
B. 3.0N
C. 4.0N
D. 5.0N

Question 7:

• JAMB 1994

If it takes 5.0 hrs to drain a container of 540.0cm³ of water, what is the flow rate of water from the container in kg^-1? [Density of water = 1000kgm^-3]

A. 32.5kg^-1 s
B. 31.5kg^-1
C. 30.8kg^-1 s
D. 30.0kg^-1 s

Question 8:

• JAMB 1994

If it takes 5.0 hrs to drain a container of 540.0cm³ of water, what is the flow rate of water from the container in kg^-1? [Density of water = 1000kgm^-3]

A. 32.5kg^-1 s
B. 31.5kg^-1
C. 30.8kg^-1 s
D. 30.0kg^-1 s

Question 9:

• JAMB 2004

The change in volume when 450kg of ice is completely melted is
[density of ice = 900 kgm^-3, density of water = 100 kgm^-3]

A. 0.50m³
B. 0.45m³
C. 0.05m³
D. 4.50m³

Question 10:

• JAMB 2005

Two liquids L₁ and L₂ are contained in a U - tube. The height and the density of L₁ are 8 cm and 10³ kgm^-3 respectively. If the density of L₂ is 800 kgm^-3, its height measured from the same level is

A. 8 cm
B. 10 cm
C. 16 cm
D. 12 cm