निम्नलिखित में से कौन सी धातु आमतौर पर विद्युत अपघटनी परिष्करण (electrolytic refining) द्वारा परिष्कृत नहीं की जाती है, बल्कि उसके पिघले हुए क्लोराइड के विद्युत अपघटन द्वारा प्राप्त की जाती है?

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?