Question

Which of these metals is commonly used in tanning of leather?

• A. Phosphorous
• B. Indium
• C. Manganese
• D. Chromium

Answer 1

Answer:

D. Chromium

Chromium salts are used in the tanning of leather. Chromium is a steely-grey, lustrous, hard and brittle transition metal which is also used as an additive in stainless steel.