If the natural moisture content, liquid limit, and plastic limit of a soil sample are 30.5%, 42.5%, and 22.5% respectively, the ratio of liquidity index to plasticity index is:

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?