GEOLOGY – 2005 ,PAPER –II, SECTION A, SECTION B

                  Time allowed: three hours     Maximum Marks: 200

Candidates should attempt questions 1 and 5 which are compulsory, and any THREE of the following questions selecting at least ONE question from each Section.

SECTION A

1.       Write on any four of the following in about 150 words each:

(a)    Biogenic sedimentary structures

(b)   Granulitic facies

(c)    Dott’s classification of sandstones

(d)   Metamorphism of calcareous sediments

(e)   Chatoyancy and asterism

2.       Write short notes on:

(a)    Miller indices and parameters

(b)   Amphibole group of minerals

(c)    Uniaxial and Biaxial minerals

(d)   4ˉ 3 m

3.       Write detailed notes on the following:

(a)    Igneous structures citing suitable examples

(b)   Metasomatism

(c)    Eclogite facies

4.       Define sedimentary environments,. Explain in detail, various parameters which control depositional environments.

SECTION B

5.       Write on any four of the following in about 150 words each:

(a)    Oxidation- Reduction potential

(b)   Neyveli lignite deposits

(c)    Principles of seismic methods of exploration

(d)   Comminution and sizing

(e)   Important global environmental impacts due to human activities

6.       Write notes on:

(a)    Iron ore deposits of India

(b)   Diamond deposits of India

(c)    Metamorphism plays vital role in formation of mineral deposits

(d)   Sedimentary ore deposits

7.       Write a detailed account on the various methods of mining used in alluvium placer deposits.

8.       Write explanatory notes on:

(a)    Thermodynamic potential equations

(b)   Core of the earth is Self Exciting Dynamo

(c)    Groundwater quality criteria for drinking water

(d)   Chemical fertilizers and pesticides as biological hazards

CHEMICAL ENGINEERING – 2003 ,PAPER –II, SECTION B

    Time Allowed: Three Hours                 Maximum Marks: 200

Candidates should attempt Questions 1 and 5 which are compulsory, and any THREE of the remaining questions selecting at least ONE question from each Section. Assume suitable data, if considered necessary, and indicate the same clearly.

  

SECTION B

 5.       Answer any four of the following :

             (a)    Name the principal varnish resins and describe in brief, the method of production of varnish.

             (b)   Describe the production of penicillin by fermentation.

             (c)    Explain the terms: deflagration and detonation, and distinguish between them.

             (d)   With the help of neat sketches, describe adiabatic lapse rate and its effect on different types of plume behavior

             (e)   Discuss the factors which must be considered in the design of activated sludge system.

6.       Present a neat flow diagram and describe the method of production of sucrose from sugarcane. Discuss the major engineering problems associated with the production of sucrose from sugarcane.

7.        A proposed manufacturing plant requires an initial fixed capital investment of Rupees 5 crores and a working capital of Rupees 1 crore. It is expected that the annual income will be Rupees 4 crores and the annual expenses including depreciation will be Rupees 1.2 crores, before taxes. A minimum annual return of 25 percent before income taxes is required. Income taxes amount to 40 percent of all pre-tax profits. Determine (a) the annual percent return on the total initial investment after income taxes, and (b) the annual percent return on the average investment before income taxes, assuming straight line depreciation and zero salvage value. 

8.       (a) Develop mass balance equations for the food and biomass in a typical activated sludge system.

                         (b)    Define BOD and COD, and explain the methods of controlling BOD and COD in tannery effluents.

CHEMICAL ENGINEERING – 2003 ,PAPER –II, SECTION A

                    Time Allowed: Three Hours                 Maximum Marks: 200

Candidates should attempt Questions 1 and 5 which are compulsory, and any THREE of the remaining questions selecting at least ONE question from each Section. Assume suitable data, if considered necessary, and indicate the same clearly.

SECTION A

1.       Answer any four of the following:

(a)    The normal boiling point of benzene (C₆H₆) is 80.1 °C and its latent heat of vaporization at 45°C.

(b)   Prove that two reversible, adiabatic lines cannot intersect.

(c)    Prove that

                             (əC / əv)  ̞ = T (ə²P / ə T²) ᵥ  

(d)   For an ideal batch reactor , derive and expression to determine the time required to achieve a desired conversion 

(e)   Compare the size of plug flow and mixed flow reactors, for first and second order reactions.

2.       Ethane (C₂H₆) is initially mixed with oxygen to obtain a mixture of 80% ethane by volume. This mixture is burned in an engine with 200% excess air. During combustion 80% of ethane burns to CO₂; 10% of ethane burns to CO and 10 % of ethane remains unburned. Determine the composition of the exhaust gas on dry basis.

3.       (a) For a particulate binary system the activity coefficients are adequately represented by in γ₁ = 0.5 X ²₂ and in γ₂ = 0.5 X ²₁ the saturated pressures of the components at 80°C are P ₁̾ = 600 torr (1 torr =1 mm Hg column). Is it possible for the system to exhibit azeotropy at 80°C? If so, what is the azeotropic composition?

                  (b) Show that for a van der Waals gas C ᵥ is a function of temperature only.

4.        Consider the reaction

                                                      {R (Desired Product)}

                        A + B =   -----       { S (Unwanted Product) }

           With the rate equations

               dCᵣ / dt = 1.0 C ¹  ͘⁵ C b ⁰  ̇³      mol / liter min

              dC s / dt   = 1.0 Ca ⁰  ̇ ⁵  Cb ¹  ̇ ⁸     mol / liter min

              Equal volumetric flow rates of A and B streams are fed to the reactor and each stram has a concentration of 20 mol/ liter of reactant. For 90% conversion of A, calculate the concentration of R in the product stream for---

           (a)    A plug flow reactor ;

           (b)   A mixed flow reactor.

FORESTRY -2003, PAPER –II , SECTION A

                       Time Allowed: Three Hours             Maximum Marks: 200

Candidates should attempt Questions 1 and 5 which are compulsory, and any THREE of the remaining questions selecting at least ONE question from each Section.

SECTION A

1.       Answer any four questions from the following (not more than 150 words for each):

               (a)    Define and explain the concept of normal forest

               (b)   Indicate the essential elements of forest working plan.

                (c)    Why is Haga-Altimeter used and how is it used for measurement?

               (d)   Explain the role of village forest in forest management.

                (e)   How is forest surveying considered important in relation to chain Surveying?

2.       Define management and indicate the concept and objection of forest management.

3.       The concept of rotation in Forestry is indicated with definitions. Explain types of forest rotation. 

4.       Forest productivity is dependent on the grown increment. Explain with definitions of increment referring current and annual increment with graphical representation.