Dear Rizi,
Rs 2 million is a good investment you can easily get plots in zone 2 however, your requirement is one kanal plot so you cant avail in best options of zone which is G-15 and F-15.
You can buy in G-16 F-16 and E-17 plus B-17. I would never recommend you G-16 location is better then rest of 3 but they are very poor developers and they don't have funds (personal Recommendation should not be considered as an estate agent advise).
E-17 is undoubtedly a good sector as developer is Habib Rafique one of very famous name. Disadvantage of E-17 is that its location and entrance you have to cross exempted area.
B-17 entrance wise development wise its a nice sector but its 11 km away from motorway chowk and you have to cross Tarnol Phatuk and Sangjani toll plaza on daily basis.