Re: AligaRh Colony in Karachi?
May be it was originally named something else and then changed to Qasba AligaRh. There are many places in Karachi (I would say all over Pakistan) where names of areas changed after partition. You might have gone through many threads on this issue.
There are many areas in Karachi which are named behind areas in India. Agra-Taj Colony (Taj Mehal of Agra, India), Hyderabad colony (Hyderabad Colony - Wikipedia, the free encyclopedia), Delhi Colony to name few.