Which of the following is not a very hard metal?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Zinc
Chromium, molybdenum and tungsten are transition metals with very strong metallic bonding, which makes them very hard with very high melting points; chromium is the hardest of all metals and is used for hard plating, and tungsten and molybdenum are added to steel to harden it. Zinc is a fairly soft metal with a low melting point (about 420 °C), used for coating iron and in alloys such as brass.