Question

Arrange the following minerals in decreasing order of their hardness as per Mohs scale.
A. Orthoclase
B. Calcite
C. Corundum
D. Fluorite

• A. A, B, C, D
• B. A, C, B, D
• C. C, A, D, B
• D. C, B, D, A

Hint:

A common mnemonic for the Mohs scale is: "Tall Girls Can Find Alligators Or Queens Through Careful Digging." (1-Talc, 2-Gypsum, 3-Calcite, 4-Fluorite, 5-Apatite, 6-Orthoclase, 7-Quartz, 8-Topaz, 9-Corundum, 10-Diamond)

Answer 1

The Correct Option is C

Step 1: Identify the hardness of the minerals on the Mohs scale:- Corundum (C): 9- Orthoclase (A): 6- Fluorite (D): 4- Calcite (B): 3

Step 2: Order the minerals from hardest to softest:1. Corundum (9)2. Orthoclase (6)3. Fluorite (4)4. Calcite (3)

Step 3: Determine the final sequence using the letters: C, A, D, B.