एक प्रतिस्थापनी अशुद्धि परमाणु (substitutional impurity atom) जो अपने द्वारा प्रतिस्थापित विलायक परमाणुओं से छोटा होता है, पड़ोसी मेजबान परमाणुओं पर किस प्रकार का विकृति (strain) उत्पन्न करता 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?