Though movie is set to the period of late 19th century but there are many goofs. 1) Handpump shown in the movie is of India Mark II (http://www.skipumps.com/deepwell.htm) which came into existence around 1980.
2) Tiled swimming pool and hose pipe were also not available during that time.
3) Costume of Nawab is of pathani touch no where near to Lucknowi.
4) During mutiny time almost everyone was fleeing from Lucknow to Faizabad or any other city, but movie shows only Aishwarya and her friends going in cart.