The first metal to be used by man was \ \ \ \ \ \ \ \ \ \ . - RRB Staff Nurse Jaipur-6th June 2018

RRB Staff Nurse Jaipur-6th June 2018

General Knowledge

Easy

Appeared in: RRB Staff Nurse Jaipur-6th June 2018

Explanation

Copper was the first metal used by humans, marking the transition from the Stone Age to the Copper Age (Chalcolithic period).
It was readily available in its native, pure form, which did not require complex extraction techniques.
Copper has a relatively low melting point and is malleable, making it easy for early civilizations to shape into tools, ornaments, and weapons using simple technology.
The subsequent discovery of alloying copper with tin to create bronze led to the Bronze Age, highlighting copper's foundational role in metallurgy.

Option A: Aluminium is highly reactive and difficult to extract from its ore. It was not isolated until the 19th century, making it a modern metal.
Option C: While used in antiquity, silver was discovered and utilized after copper. It was also rarer and softer, making it more suitable for currency and ornaments rather than functional tools.
Option D: Iron smelting requires much higher temperatures than copper smelting. The technology to achieve this was developed much later, leading to the Iron Age, which followed the Bronze Age.

Visual 1: Timeline - A simple timeline graphic showing the sequence: Stone Age -> Copper Age -> Bronze Age -> Iron Age, with approximate dates to illustrate the historical progression of material use.
Visual 2: Infographic - An infographic comparing the properties of Copper, Bronze, and Iron (e.g., melting point, hardness, discovery date) to explain why copper was used first.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain History of metallurgy and early human civilization as background academic context rather than a clinical decision trigger.
While this is a general knowledge question, understanding the biological role of metals is crucial in nursing.
Copper is an essential trace element. Its deficiency can cause anemia that is unresponsive to iron therapy, as copper is necessary for iron metabolism. Nurses should be aware of this link when assessing nutritional deficiencies.
Excess copper is toxic and is characteristic of Wilson's disease, a genetic disorder. Nurses may encounter patients with this condition and must understand the signs (e.g., Kayser-Fleischer rings in the eyes) and treatment (chelation therapy).

How to Approach the Question

Identify the core of the question: It asks for the 'first' metal used by humans.
This is a factual recall question based on historical periods of human civilization.
Mentally review the timeline of technological ages: Stone Age, followed by the ages named after dominant materials.
The sequence is Copper Age (Chalcolithic), then Bronze Age, then Iron Age. This immediately places copper before iron.
Evaluate the options based on this timeline and general knowledge. Aluminium is a modern metal discovered in the 1800s. Silver was used early but was less common and practical for tools than copper.
Conclude that copper fits the description of the first metal to be widely used, marking a new technological era after the Stone Age.

Concept Tested & Keywords

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