Pipe A alone can fill an empty tank in 16 hours, and pipe B alone can fill the same tank in 35 hours. How long will it take to fill half of the tank if both are turned on simultaneously?

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?