What is the weight of heart of a normal adult human being?

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What is the weight of heart of a normal adult human being? Answer: 300 grams

Question context

This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.