भारत की किस नदी को ऐतिहासिक रूप से संस्कृत नाम 'लवनावती' (नमक की नदी) के 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?