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

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

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Chemical Engineering Plant Economics
Pick out the correct statement.

Sum-of-the-years-digits methods of depreciation calculation accounts for the interest on the investment
Difference between income and expense is termed as gross revenue
Scrap value is the net amount of money obtainable from the sale of used property over and above any charges involved in its removal & sale
Unamortised cost is the difference between the original cost of a property and all the depreciation charges made to dat

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Chemical Engineering Plant Economics
In a manufacturing industry, break even point occurs, when the

Annual profit equals the expected value
Total annual rate of production equals the assigned value
Annual sales equals the fixed cost
Total annual product cost equals the total annual sales

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