✅ Correct Answer: 6 columns
Source: This question is taken from the Traffic Warden in Punjab Police Department BS-14
✅ Correct Answer: Wrought iron
Source: This question is taken from the 200 Most Expected MCQs for ASI/SI PPSC Test Preparation
Source: This question is taken from the Inspector Cooperative Societies (Bs-14) Cooperatives Department Punjab Public Service Commission (PPSC) Club-104