पृथ्वी पर उपलब्ध निम्नलिखित में से सबसे कठोर प्राकृतिक पदार्थ कौन सा है?

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?