Question

EXERCISE
1. Which of the following is not a physical property to describe the appearance
of materials?
Choose the correct option for each of the following.
Cal Lustre
(b) Hardness
(c) Roughness
(d) Reactivity ​

Answer 1

Answer:

Color, phase, odor and boiling point are the physical properties. Reactivity with oxygen depends on the chemical nature of object, thus, it is not a physical property. It is a chemical property

Answer 2

Reactivity

I'm happy to help :)

this was my before last year's book