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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

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.

2298. In practical operation of any furnace, zero oxygen percentage or theoretical CO₂ percentage in flue gas is rarely achieved, because of

Use of non-preheated combustion air

Use of pulverised solid fuels

Imperfect mixing of fuel & air and infiltration of air

Use of excessive positive draft in the furnace

✅ The correct answer is option C.

2303. Which of the following relationship is not correct is case of a chemical process plant ?

Manufacturing cost = direct product cost + fixed charges + plant overhead costs

General expenses = administrative expenses + distribution & marketing expenses

Total product cost = manufacturing cost + general expenses

Total product cost = direct production cost + plant overhead cost.

✅ The correct answer is option D.

2308. Gantt chart (or Bar chart) is helpful in

efficient utilisation of manpower and machines.

preparing production schedule.

efficient despatching of products.

inventory control.

✅ The correct answer is option B.

2313. Operation of blast furnace stove is based on the principles of a __________ furnace.

Regenerative

Recuperative

Both A and B

Neither A nor B

✅ The correct answer is option A.

2318. Which of the following is not a component of working capital ?

Raw materials is stock.

Finished products in stock.

Transportation facilities.

Semi-finished products in the process.

✅ The correct answer is option C.

2323. A refractory wall separating the stock and the source of heat is provided in a

Updraft kiln

Muffle furnace

Continuous furnace

None of these

✅ The correct answer is option B.

2327. Manufacturing cost in a chemical company does not include the

fixed charges.

plant overheads.

direct products cost.

administrative expenses.

✅ The correct answer is option D.

2332. Which is not accomplished in an underfired furnace?

Increase in heating capacity/m² of floor space

Elimination of cold spot at the bottom of the charge

Reduction in the temperature of furnace gases

Portection of the periphery of the charge from excessive radiation

✅ The correct answer is option A.

2261. In a manufacturing industry, break even point occurs, when the

total annual rate of production equals the assigned value.

total annual product cost equals the total annual sales.

annual profit equals the expected value.

annual sales equals the fixed cost.

✅ The correct answer is option B.

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