वस्तु की मात्रा (द्रव्यमान) बदलने पर निम्नलिखित में से कौन सी भौतिक राशि अपरिवर्तित रहेगी?

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?