वे खनिज जिनसे धातुओं को सुगमतापूर्वक तथा लाभकारी रूप में निष्कर्षित किया जा सकता है, क्या कहलाते हैं?

Which of the following events is considered a major turning point that fueled Indian nationalism during British rule due to its brutal nature and widespread condemnation?

Which of the following events is considered the first major peasant uprising against the British in India?