भारत में भू-जल में आर्सेनिक प्रदूषण, जो एक प्रमुख भू-जनिक (geogenic) खतरा है, सबसे अधिक किस राज्य के जलोढ़ मैदानों में पाया जाता है?

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?