Answer: The correct answer is Hardness.
Explanation:
Scratch test: It is a test which is performed to determine the hardness of the a materiel. This test was given by by Friedrich Mohs in 19th century. The Mohs scale of hardness ranges from 1 to 10.
The harder the materiel more will be the value on the Mohs Scale. Diamond is the hardest materiel with scale value of 10. the harder materail will able to scratch lessor hard materiel.
Hence, the correct answer is Hardness.
