BECE Science 2023 Paper

Concept:Density is mass per unit volume. When volume is fixed, the product with the greater mass has the greater density.Explanation:Write the density formula: $\text{Density} = \frac{\text{Mass}}{\text{Volume}}$.Since all products have equal volume, compare only their masses.Convert every mass to the same unit, grams ($\text{g}$).Product $X$: $0.05\ \mathrm{kg} = 0.05 \times 1000 = 50\ \mathrm{g}$.Product $Y$: $50\ \mathrm{mg} = \frac{50}{1000} = 0.05\ \mathrm{g}$.Product $Z$: $500\ \mathrm{g}$.Product $W$: $0.05\ \mathrm{g}$.The masses are: $X = 50\ \mathrm{g}$, $Y = 0.05\ \mathrm{g}$, $Z = 500\ \mathrm{g}$, $W = 0.05\ \mathrm{g}$.Product $Z$ has the largest mass, so it must have the highest density.Answer:Product $Z$ is correct, which is Option C.