Correct Answer: Correct answer is: (D) Iron.
Exam Relevance: UPSC, Civil Services, IAS, Competitive History Exams
Difficulty: Moderate
Concept notes: The Indus Valley Civilization was advanced in metallurgy but did not have knowledge of iron.
Common Mistakes: Students may mistakenly believe that the Indus Valley Civilization had knowledge of all metals, including iron, due to their advanced metallurgical skills.
Explanations: The Indus Valley Civilization, which flourished around 2600-1900 BCE, was known for its advanced metallurgical skills, particularly in the use of copper, bronze, gold, and silver. However, archaeological evidence does not indicate the use of iron during this period. Iron smelting and usage became widespread in the Indian subcontinent only after the decline of the Indus Valley Civilization, around 1200 BCE. Therefore, iron was unknown to the Indus Valley Civilization.
Option Analysis: - Option A: Copper was known and used by the Indus Valley Civilization.
- Option B: Gold was known and used by the Indus Valley Civilization.
- Option C: Silver was known and used by the Indus Valley Civilization.
- Option D: Iron was not known to the Indus Valley Civilization.
Mnemonic: Copper, Gold, Silver - Known, Iron - Unknown (CGS-K, I-U)
IAS UPSC Mathematics Optional Syllabus 2020
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