निम्नलिखित में से किस गैस की हीमोग्लोबिन के प्रति सबसे अधिक बंधुता (Affinity) होती है, जो इसे अत्यधिक विषैला बनाती 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?