2293. ‘Lang factor’ is defined as the ratio of the capital investment to the delivered cost of major equipments. The value of ‘Lang factor’ for fixed capital investment, for a solid-fluid processing chemical plant ranges from September 7, 2025 by Admin 1.2 to 1.4 2.5 to 2.7 4.2 to 4.4 6.2 to 6.4 ✅ The correct answer is option C.