Chemical Engineering Plant Economics
'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

2.5 to 2.7
4.2 to 4.4
1.2 to 1.4
6.2 to 6.4

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Chemical Engineering Plant Economics
Which of the following relationship is not correct is case of a chemical process plant?

Total product cost = direct production cost + plant overhead cost
Manufacturing cost = direct product cost + fixed charges + plant overhead costs
Total product cost = manufacturing cost + general expenses
General expenses = administrative expenses + distribution & marketing expenses

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