Q. Which city is sometimes called the 'Black City of India'?
Answer:
Kolkata
Notes: Kolkata is also known as the Black City. The Black Hole of Calcutta is the name for a location in then-British-run Fort William on the River Hooghly. There, in 1756, prisoners of war died when they were stuffed into cramped and unliveable conditions for a night. Despite this, Kolkata, one of India's largest cities altogether, is a vibrant place to be and it's considered a cultural capital of the country. Ironically, it is also called the City of Joy.