Which of the following is not a true statement about the hardness of a mineral?
A) If a pocketknife can scratch a mineral, it means the mineral is 5 or less on the Moh's Hardness Scale
B) If a human fingernail can scratch a mineral, it means the mineral is 2 or less on the Moh's Hardness Scale
C) If a window glass can scratch a mineral, it means the mineral is 5.5 or less on the Moh's Hardness Scale
D) If a steel file scratches a mineral, it means the mineral if 7.0 or higher on the Moh's Hardness Scale
E) If quartz scratches a mineral, it means the mineral is 7.0 or lower on the Moh's Hardness scale

Question

Quizplus · Accepted Answer

A steel file can scratch minerals with a hardness less than 7.0, not 7.0 or higher.

Which of the Following Is Not a True Statement About