AH 12: What Name to Use When Registering for GRE, TOEFL, IELTS, SAT or ACT Tests

Sir, my name is Varada kvvss Ramnadh Recently I applied for Indian passport they are asking expansion of entries, if I provide initial expansion to them, which is not available on 10 to degree certificates, aadhar all certificates as(varada kvvss ramnadh). I have following questions: 1. Will it create any problem for applying USA visa? 2. What name to use for Registering for GRE 3. What name can iIget in MS certificate as per passport name or ssc certificate name?