प्रधानमंत्री जवाहरलाल नेहरू द्वारा हीराकुंड बहुउद्देशीय परियोजना का आधिकारिक तौर पर उद्घाटन किस तारीख को किया गया था?

Mahatma Gandhi's last fast unto death in 1948 was primarily against which of the following?

What was the primary meaning of 'Swaraj' as popularized by Mahatma Gandhi during India's independence movement?

What was one major impact of India’s independence on its economy?