NDA 2025 Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesNDA 2025

Which one among the following elements is known to be discovered the earliest ?

Answer: (A)

Solution

Copper is regarded as the earliest metal known to and used by humans, from about 9000

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-033034