Exam Question
A piece of aluminium has a mass of 300 g and its volume is 42 cm3.
Calculate (16)
(a) Its density in kg/m3
(b) The relative density
(c) The mass of 100 cm3 of aluminium
Class 4 (4th Engineer)
SC&S
📅 Oct 2023
Reference Answer
### **Fundamental Principles**
1. **Density (ρ):** Density is a measure of mass per unit volume. It is an intrinsic property of a substance. The standard SI unit for density is kilograms per cubic meter (kg/m³).
2. **Relative Density (RD) / Specific Gravity:** Relative Density is the ratio of the density of a substance to the density of a reference substance (usually fresh water at 4°C) at a specified condition. It is a dimensionless quantity.
### **Given Data**
1. **Density (ρ):** Density is a measure of mass per unit volume. It is an intrinsic property of a substance. The standard SI unit for density is kilograms per cubic meter (kg/m³).
2. **Relative Density (RD) / Specific Gravity:** Relative Density is the ratio of the density of a substance to the density of a reference substance (usually fresh water at 4°C) at a specified condition. It is a dimensionless quantity.
### **Given Data**
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