IFS Chemical Engineering question paper, 2006, Indian Forest Service, test papers

SECTION A

1. Answer any four of the following (in 150 words, maximum)(a) Discuss about proximate analysis of coal. (10)
(b) Discuss about Mollier diagrams. (10)
(c) An aqueous solution contains 40% Na2CO3 by weight. Express the composition in mole per cent. (10)
(d) A natural gas has the following composition, in volumetric per cent: Calculate:-
(i) Composition in mole per cent.
(ii) Composition in weight per cent. (10)
(e) Discuss the mathematical statement of second law of thermodynamics. (10)
2. (a) Mono-chloroacetic acid (MCA) is manufactured in a semi batch reactor by the action of glacial acetic acid with chlorine gas at 373 K in the presence of PC13 catalyst. MCA thus formed will further react with chlorine to form dichloroacetic acid (DCA). To prevent the formation of DCA, excess acetic acid is used. A small-scale unit, producing 5000 kg/d MCA, requires 4536 kg/d of chlorine gas. Also, 263 kg/d of DCA is separated in the crystallizer to get almost pure MCA product. Find the % conversion, % yield of MCA and selectivity. (25)

(b) Discuss about the heat of reaction. (15)

3. (a) For the reaction A → R, K = 0.02 min. It is desired to produce 4752 g moles of R per 10 hours a day and 99% of A entering the reactor is to be converted in a batch reactor. To charge the reactor and heat it to reaction temperature requires 0.26 hours. To discharge the reactor and to prepare it for the next run takes 0.9 hours. Calculate the volume of the reactor required. Pure A with molar density of 8 g mole per liter is charged to the reactor. (25)

(b) Discuss about phase rule. (15)

4. (a) Discuss ideal solution and its properties. (20)(b) Derive an expression for design equation for an ideal batch reactor. (20)

SECTION B

5. Write short notes on any four of the following (in 150 words, maximum)(a) PVC (10)
(b) Principles of piping layout (10)
(c) Coal chemicals (10)
(d) Alternative investments (10)
(e) Effects of air pollution (10)
6. (a) Describe the manufacture of penicillin using fermentation route. (20)(b) List the mathematical methods for profitability evaluation and describe any one. (20)
7. List various environmental protection laws and give the main features/provisions of any four in brief. (40)
8. (a) Discuss the estimation of capital investment. (20)(b) Discuss petroleum refining briefly. (20)