वायुमंडल में तड़ित (बिजली कड़कने) के दौरान प्राकृतिक रूप से कौन सी गैस उत्पन्न होती है?

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?