Question

Which of the following is NOT an intensive property?

• A. Surface tension
• B. Density
• C. Refractive index
• D. Heat capacity

Hint:

Specific heat capacity is intensive, but heat capacity itself is extensive.

Answer 1

The Correct Option is D

Step 1: Define intensive and extensive properties.
Intensive properties are independent of the amount of substance present, whereas extensive properties depend on the quantity of matter.

Step 2: Analyze each option.
Surface tension: Independent of amount → intensive property.
Density: Mass per unit volume, independent of amount → intensive property.
Refractive index: Depends on nature of substance, not quantity → intensive property.
Heat capacity: Depends on the amount of substance present → extensive property.

Step 3: Conclusion.
Heat capacity is not an intensive property because it varies with the quantity of matter.