sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Why do Indians keep asking questions about what other nationalities think about them?
 sentence 2: Why are Indians so obsessed about what people from other countries think about India? sentence 1: Smartphones: What is the best phone camera at the moment?
 sentence 2: Which phone has the best camera?
not same meaning
same meaning
same meaning