This collection provides CBSE Class 12 question papers from 2015 onwards, giving students an opportunity to become familiar with the pattern, format, and types of questions asked in the Board examinations.
24 Sep 2026
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Did You Know? (Ancient Civilizations)
Some Indus Valley cities had sophisticated drainage systems.
Some cities within the Indus Valley Civilization, including Mohenjo-daro, featured remarkably sophisticated covered drainage and sewage systems, considered advanced even by many later ancient standards. Individual homes were often connected to a larger citywide drainage network, suggesting significant attention to public sanitation and urban planning. This level of infrastructure development was relatively unusual for its time and reflects the civilization's broader emphasis on organized city design.
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