Q. As per the Mohs scale of mineral hardness, which of the following are soft metals?

1. Gold
2. Copper
3. Diamond
4. 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.

This question is part of 40000+ MCQs GKToday PCS Mock Tests Series in GKToday Android app. Question Number: 33 in GKToday PCS Mock Test - 297 in above course in App.