वह परिघटना जिसमें गिरती हुई वर्षा की बूंदें वायुमंडल से प्रदूषकों को अवशोषित और दूर करती हैं, _______ कहलाती है।

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?