Which of the following pairs is INCORRECT?

Correct option is D

The correct answer is (d) Non-metal – Lead.
Lead is a soft, malleable, and dense metal that is classified as a post-transition metal. It is primarily used in batteries, radiation shielding, and various other industrial applications.
The other pairs are correct:
· Non-ferrous metal – Zinc (Option a): Zinc is a non-ferrous metal as it does not contain iron. Non-ferrous metals are resistant to corrosion and are lightweight.
· Precious metal – Platinum (Option b): Platinum is a precious metal known for its rarity, resistance to corrosion, and use in jewelry and industrial applications.
· Ferrous metal – Iron (Option c): Iron is a ferrous metal as it contains iron and is known for its magnetic properties and strength.
Information Booster:
● Non-ferrous metals do not contain iron and are resistant to rust (e.g., aluminum, copper, zinc). ● Precious metals like gold, silver, and platinum are rare and valued for their aesthetic and industrial uses. ● Ferrous metals contain iron and are known for their strength but are prone to rusting (e.g., steel, cast iron). ● Lead, as a metal, has high density and low melting point, making it useful in industries like construction and batteries.