.Name the SI unit of i) Amount of substance ii) Density iii) Electric Current iv)Luminous Intensity.

1. Amount of Substance

The SI unit for the amount of substance is the mole (symbol: mol).

2. Density

The SI unit for density is kilograms per cubic meter (symbol: kg/m³).

3. Electric Current

The SI unit for electric current is the ampere (symbol: A).

4. Luminous Intensity

The SI unit for luminous intensity is the candela (symbol: cd).

These units are fundamental to scientific measurements and are standardized under the International System of Units (SI). Understanding and mastering these units helps ensure accurate communication and calculations in various scientific fields.