FACTS OF THE CASE :- In 1983, the Chandigarh Housing Board (CHB) issued an advertisement inviting applications for housing units, with specific reservations for Scheduled Castes (SCs) and Scheduled Tribes (STs). Tarsem Lal, originally from Rajasthan and recognized as an ST there, applied under the ST category, citing his long-term residence in Chandigarh. However, his application was rejec…