स्थिर तापमान और दाब पर जब कोई निकाय संतुलन में पहुँचता है, तो कौन सा ऊष्मागतिक विभव (Thermodynamic potential) न्यूनतम हो जाता 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?