The diagram represents four measuring cylinders containing liquids. The mass and volume of the liquid in each cylinder are stated. Which two measuring cylinders could contain an identical liquid? (Picture)

A. W and X B. W and Y

C. X and Y D. X and Z

A solid of density 900 kg/m³ floats in oil as shown in the given diagram. The oil floats on water of density 1000 kg/m³ as shown. The density of oil in kg/m³ could be:

A. 850 B. 900

C. 950 D. 1050

The density of water is 1000 kg/m³ and the density of copper is 8900 kg/m³. Which of the following statements is incorrect?

A. = 8.9

B. = 8.9

C. = 8.9

D. = 8.9

Consider the following information in respect of four objects A, B, C and D:

Which object would float on water?

A. A

B. B

C. C

D. D

If two equal weights of unequal volumes are balanced in air, what will happen when they are completely dipped in water? Why?