Question

question 4 1 pts what is the primary purpose of using common objects in mineral hardness testing? to test only metallic minerals to get more accurate results to replace the mohs scale entirely to provide convenient testing alternatives

Explanation:

Common objects like fingernails, copper coins, etc. are used in mineral hardness testing as they are easily accessible. They don't replace Moh's scale but offer a convenient way to estimate hardness in the field or without specialized equipment. They are not just for metallic minerals and don't provide more accurate results than Moh's scale - based tests.

Answer:

To provide convenient testing alternatives