ऊँची इमारतों को बिजली (आकाशीय विद्युत) के प्रभाव से सुरक्षित रखने के लिए उनके ऊँचे भागों पर कौन-सा उपकरण लगाया जाता 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?