Chemical Engineering Plant Economics
Which of the following is the costliest source of getting hydrogen on commercial scale for the manufacture of nitrogeneous fertiliser?

Coal gasification
Coke oven gas
Alectrolysis of water
Steam reforming of naphtha

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Chemical Engineering Plant Economics
In declining balance method of depreciation calculation, the

Value of the asset decreases linearly with time
None of these
Annual depreciation is the fixed percentage of the property value at the beginning of the particular year
Annual cost of depreciation is same every year

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