Question

Which of the strong abrasive is used to achieve the smoothness on the stone sculpture?

• A. Softstone
• B. Carborundum
• C. Lime stone
• D. Sand stone

Hint:

On the Mohs scale of mineral hardness, most stones (like marble or granite) are between 3 and 7. Silicon Carbide (Carborundum) is about 9.5, making it highly effective for abrading stone.

Answer 1

The Correct Option is B

Step 1: Identify the need for a "strong abrasive" for stone. To smooth or shape stone, one needs a material that is significantly harder than the stone itself.
Step 2: Evaluate the options. Softstone, Limestone, and Sandstone are all types of rock, not specialized abrasives. Carborundum is a common trade name for Silicon Carbide (SiC), an extremely hard synthetic compound that ranks just below diamond on the Mohs hardness scale. It is widely used for grinding, sanding, and polishing hard materials like stone and metal.