Question

Which of the following is an extensive property?

• A. Pressure
• B. Internal Energy
• C. Temperature
• D. Refractive index

Answer 1

The correct option is B

Internal Energy

Consider a system containing one mole of gas and having internal energy 'U'. Now when we divide the system into two systems the internal energy of each of the system is different from 'U'. Internal energy is dependent of the amount of the system. If amount is added or removed then the internal energy of the system changes. Therefore it is an extensive property.