The 2nd smallest planet in our solar system is Mars. It is the second smallest planet after Mercury, with a diameter of about 6,792 km (4,220 miles).
The 2nd smallest planet in our solar system is ___________?
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Question context
This question is part of 📚 General Knowledge within the broader 🌐 Current Affairs & GK subject and appears in the ASF Airports Security Force preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.