The alumni association of the IIT has written to Prime Minister Manmohan Singh, attacking HRD Minister Kapil Sibal over his one-nation-one-exam policy for engineering entrance. The association writes: “IITs are being destroyed by mindless tampering by people in the HRD Ministry.” It also warned that decisions like forcing a common entrance exam for all engineering colleges not only affected the autonomy of IITs but also its standing as world-class brand.