Q. As per the Mohs scale of mineral hardness, which of the following are soft metals? - Gold
- Copper
- Diamond
- Thorium
Select the correct option from codes given below:
Answer:
1, 2 & 4 Only
Notes: As per the Mohs scale of mineral hardness, the soft metals are: Lead, gold, silver, tin, zinc, aluminium, thorium, copper, brass and bronze. Diamond is one of the hardest known metals on earth.