वह तापमान और दबाव की स्थिति जिस पर किसी पदार्थ की ठोस, तरल और गैसीय अवस्थाएँ संतुलन में एक साथ रह सकती हैं, क्या कहलाती है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?