एक प्रथम-कोटि की अभिक्रिया 20 मिनट में 15% पूरी होती है। इसे 60% पूरा होने में कितना समय लगेगा?

The arrival of which commission in India triggered widespread protests, including mass hartals across the country in 1928?

Which of the following leaders was instrumental in initiating and leading India’s struggle for independence?