निम्नलिखित में से कौन सा रेडियोधर्मी तत्व मुख्य रूप से परमाणु ऊर्जा संयंत्रों में परमाणु ईंधन के रूप में उपयोग किया 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?