Noida/Ghaziabad, April 21 -- Nidhi Rani from Mihir Bhoj Balika Inter College in Dadri topped the Class 12 Uttar Pradesh Board examinations from Gautam Budh Nagar (GB Nagar) district with 93.80% while in Ghaziabad, Dhruv Chauhan secured first rank in the district with 96.4% from Rose Bell Public School in Vijaynagar....