क्यूप्रिक सल्फेट (CuSO4 • 5H2O) को व्यावसायिक रूप से किस नाम से जाना जाता है?

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?