निम्नलिखित में से कौन सा वनस्पति आधारित (पौधे से प्राप्त) कीटनाशक नीम के पेड़ से प्राप्त होता 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?