QP CGSPE26 Geol-Hydrogeo II 09022026

Combined Geo-Scientist (Preliminary) Examination, 2026 DO NOT OPEN THIS TEST BOOKLET UNTIL YOU ARE TOLD TO DO SO T.B.C. : BBSP-T-GHD Test Booklet Series Serial No. TEST BOOKLET Geology/Hydrogeology Time Allowed : Two Hours Maximum Marks : 300 INSTRUCTIONS IMMEDIATELY AFTER THE COMMENCEMENT OF THE EXAMINATION, YOU SHOULD CHECK THAT THIS TEST BOOKLET DOES NOT HAVE ANY UNPRINTED OR TORN OR MISSING PAGES OR ITEMS, ETC. IF SO, GET IT REPLACED BY A COMPLETE TEST BOOKLET. Please note that it is the candidate’s responsibility to encode and fill in the Roll Number and Test Booklet Series Code A, B, C or D carefully and without any omission or discrepancy at the appropriate places in the OMR Answer Sheet. Any omission/discrepancy will render the Answer Sheet liable for rejection. You have to enter your Roll Number on the Test Booklet in the Box provided alongside. DO NOT write anything else on the Test Booklet. This Test Booklet contains 120 items (questions). Each item comprises four responses (answers). You will select the response which you want to mark on the Answer Sheet. In case, you feel that there is more than one correct response, mark the response which you consider the best. In any case, choose ONLY ONE response for each item. You have to mark your responses ONLY on the separate Answer Sheet provided. See directions in the Answer Sheet. All items carry equal marks. Before you proceed to mark in the Answer Sheet the response to various items in the Test Booklet, you have to fill in some particulars in the Answer Sheet as per instructions sent to you with your Admission Certificate. + After you have completed filling in all your responses on the Answer Sheet and the examination has concluded, you should hand over to the Invigilator only the Answer Sheet. You are permitted to take away with you the Test Booklet. Sheets for rough work are appended in the Test Booklet at the end. Penalty for wrong Answers : THERE WILL BE PENALTY FOR WRONG ANSWERS MARKED BY A CANDIDATE. (0) There are four alternatives for the answer to every question. For each question for which a wrong answer has been given by the candidate, one-third of the marks assigned to that question will be deducted as penalty. (11) If a candidate gives more than one answer, it will be treated as wrong answer even if one of the given answers happens to be correct and there will be same penalty as above to that question. (iii) If a question is left blank 1.0. no answer is given by the candidate, there will be no penalty ‘for that question. DO NOT OPEN THIS TEST BOOKLET UNTIL YOU ARE TOLD TO DO SO ஙா 1. The diametric opposite of Lyell’s principle of uniformitarianism is (a) Cycle of erosion (b) Gradualism (c) Catastrophism (d) Steady-statism . Which one of the following statements related to Earth is NOT correct ? (a) The core occupies about 16% of totai Earth’s volume (b) The mantle occupies about 83% of totai Earth’s volume (c) Average density of continental crust is 3-0 g/cm? (৫) The mantle is largely composed of peridotite . The sinking flow of the top limb of the Hadley cells promotes (a) Drying and warming of the air (b) Evaporation of the oceanic water (c) Katabatic winds (d) Condensation of the moisture -BBSP-T-GHD - A 4. The basis of calculation of. Richter magnitude in earthquake is (a) Distance from the focus (b) Amplitude of the largest seismic wave (c) Amount of ground shaking (d) Severity of destruction . Consider there is no erosion, how much percentage of crust would be used to lower the Moho boundary because of isostasy, if the crust thickness is doubled ? (a) 100% (b) 80% (c) 60% (৫) 50% . Which one of the following is NOT related to Andean-type mountain building ? (a) Emplacement of Batholiths (b) Development of Accretionary Wedge (c) Gravitational collapse (d) Building of Volcanic Arcs 7. Consider the following statements regarding glaciers : Statement—I : To the first order, at higher altitudes the mass balance always has a positive gradient with elevation Statement - II: Where the mass bal- ance is positive, it has snowed more. than it melts in a year and vice versa Which one of the following is correct in respect of the above statements ? (a) (b) (০) (6) Both the statements are indi- vidually true and Statement II is the correct explanation of State- ment I Both the statements are indi- vidually true but Statement II is not the correct explanation of Statement I Statement I is true but Statement 11 is false Statement I is false but State- ment II is true 8. Match List I with List II and select the correct answer using the code given below the lists : List I List II (Dune type) (Form and position) A. Lee dune 1. Irregular accumu- lation rising up windward side of large topographic obstruction B. Fore dune C. Lunett ಕಟ್‌ 2. Crescent-shaped opening upwind D. Climbing ಜಃ 3. Elongated down- wind from topo- graphic obstruc- tion 4. Roughly arcuate with arms extending down- wind either side of obstruction Code : ଧୃ ଏ ୨୧ 3 வல்‌ ୯ 3 | (410; 1 9. Which one of the following landforms is commonly found at the base of waterfalls ? (a) Potholes (b) Plunge pools (c) Rapids (0) Arroyos A ¬ BBSP-T-GHD 10. Consider the following statements (c) Chlorite regarding fluvio-glacial deposition : (0) Montmorillonite 1. Meltwater can deposit sediment on, in, under and along the mar- gins of glaciers 12. Match List I with List 11 and select the correct answer using the code ८ ८ given below the lists : 2. Eskers are sinuous, sometimes discontinuous, ridges formed of sand, gravel or boulders and range List I List II up to 200 m in height, 3 km in (Product) (Occurrence) width and 100 km or more in length A. Ferricrete 1. Humid to sub- humid tropical 3. Kame terraces are formed by the environments lateral or frontal accumulation of છે. 5007000 fluvio-glacial deposits along the ৰ ( ice margin C. 61017616 2. Very arid regions Which of the statement(s) given above D. Calcrete 3. Semi-arid is/are correct ? environment (a) 1 and 2 only 4. Humid and arid tropical environ- ments (b) 1 only Code : (c) 2 and 3 only (৫) 1, 2 and 3 61 44 (8 ಬ 3 11. Which one of the following clay minerals has maximum expansion ? (b) 1 2 4 5 (a) Kaolinite (9):: ક த 4 1 ൪) 11116 | (0). 3 21 4 BBSP-T-GHD - A 4 13. 14. Match List I with List II and select the correct answer using the code given below the lists : List I List II (Type of strength (Characteristic) in rock) A. Yield 1. Highest stress Strength amount the rock experienced 85 ‏مو سان‎ before rupturing trength ભળી 2. Stress at which the rock ruptures C. Fundamental Strength 3. Highest Stress which the rock is D. Failure able to withstand Strength regardless of time 4. Stress above which permanent deformation occurs in the rocks Code : 20:35 ಲ. ಟಾ (ध). 013 ଆ ‏ڑکا‎ 0 அலக்‌ ୦୭୦, ash त] 2 Consider the following statements regarding viscous materials : 1. Relative viscosity is related to competency which is resistance of layers or objects to flow 2. Viscous deformation implies dependence of stress on strain rate 3. Perfectly viscous materials are also known as Newtonian fluid आ Which of the statement(s) given above is/are correct ? (a) 1 and 2 only (b) 1 only (c) 2 and 3 only (6) 1, 2 and 3 Match List I with List II and select the correct answer using the code given below the lists : List I List 11 (Type of (Characteristic) linear fabric) A. Surface 1. Linear structures lineation on Earth’s surface seen from satellite B. Mineral ‏0و‎ lineation 2. Numerous parallel hinges of milli- meter dimension folds 3. Elongated mineral aggregates easily C. Rodding D. Crenulation પાણા distinguishable from rest of the E. Lineament rock 4. Penetrative paral- lel arrangement of elongate minerals in a rock 5. Slickenlines Code : এ ES ધિ ‏و 09900 9وہ مان تر تن‎ 0 27 ୫) 1 પ ୧ 214 91 ଓ ୫ 6 ٦٤ A ¬ BBSP-T-GHD 16. Ty. Consider the following statements regarding boudinage structure : 1. Boudinage structure always indi- cate layer parallel shortening 2. Boudins are more or less regularly shaped and spaced fragments of competent layers or foliation 3. Shape of the boudins reflects the viscosity contrast at the time of deformation 4. Rectangular boudins imply higher ` competence contrast and more brittle deformation than barrel- shaped ones Which of the statements given above are correct ? (a) 1, 2 and 3 (b) 2, 3 and 4 (c) 3 and 4 only (6) 1 ळत 4 Consider ` 116 following statements regarding order of folds : Statement—I : Parasitic folds are high-order folds Statement - 11 : First-order folds are generally regional scale features Which one of the following is correct in respect of the above statements ? (a) Both statement I and statement II are true and statement II is the correct explanation of statement I BBSP-T-GHD - A 18. (b) Both statement I and statement II are true and statement II is not the correct explanation of statement I (©) Statement I is true but statement 11 is false (ત) Statement I is false but state- ment II is true Consider the following statements regarding fault ramps : Statement—I : An individual fault surface generally is not a flat surface but may have ramps connecting different segments of the fault Statement - 11 : If a fault is segmented but segments are not connected by a dis- tinct ramp fracture, the structure is a step over Which one of the following is correct in respect of above statements ? (a) Both statement I and statement 11 are true and statement II is the correct explanation of statement I (৮) Both statement I and statement II are true and statement II is not the correct explanation of statement I (c) Statement I is true but statement IT is false (6) Statement I is false but state- ment II is true 19. Diameter of Mohr circle for stress 20. 21. equals (a) The maximum principal stress (୦1) (2) The intermediate principal stress (०2) (८) The minimum principal stress (০3) (d) The difference of maximum and minimum principal stresses (9-93) Consider the following statements regarding shear bands in S-C mylo- nite : Statement—I : A set of shear bands commonly form par- allel to the wall of main shear zone are the C-surfaces Statement - 11: C-surfaces are small scale shear zones that affect the foliation within the main shear zone Which one of the following is correct in respect of above statements ? (a) Both statement I and statement 11 are true and statement II is the correct explanation of statement I (b) Both statement I and statement II are true and statement II is not the correct explanation of statement I (c) Statement I is true but statement II is false (6) Statement I is false but state- ment II is true Consider the following statements regarding mica fish structure : 22. Statement—I : Mica fish can be regarded as a type of S-C structure Statement - 11: Mica fish are com- monly seen to be con- fined by shear bands Which one of the following is correct in respect of above statements ? (a) Both statement I and statement II are true and statement II is the correct explanation of statement I (b) Both statement I and statement II are true and statement II is not the correct explanation of statement I (c) Statement I is true but statement II is false (6) Statement I is false but. state- ment II is true Consider the following statements regarding V-rules of geological maps : 1. A plunging anticline whose axis plunges in the direction opposite to the slope of the valley floor will form a V upstream 2. If the axis of the anticline plunges in the same direction as the valley floor, the V points downstream, if the fold plunge is more than the valley slope 3. An asymmetric fold defines an asymmetric V in a valley 4. A unit defining a fold whose axis lies across the axis of a valley appears as two outcrop belts Which of the statements given above are correct ? (೩) 1 and 2 only (b) 1, 3 and 4 only (০) 2, 3 and 4 only (d) 1, 2, 3 and 4 A ¬ BBSP-T-GHD 23. 24. On a geological map closed outcrop patterns are bounded from all sides by thrusts. Which of the following interpretations of the outcrop patterns are correct ? 1. It may represent a nappe 2. It may represent ೩ klippe | 3. It may tectonic window represent a 4. It may represent a diapiric fold/ salt dome Select the answer using the code given below : (a) 1 and 2 only (b) 2 and 3 only ©) 120 5 (0) 1, 3 भाव 4 Which one of the following statements is NOT true for stereographic projec- tion of the structural data ? छ (a) The structural data are plotted on stereonet overlay as the lower half of projection sphere (b) A plane is plotted as a line, and a line as a point on the stereonet (c) A horizontal bed will be plotted as the large primitive circle and a dipping bed along the small circle girdle (৫) Anticline and syncline cannot be differentiated by plotting the dips of the fold limbs on the stereonet BBSP-T-GHD - A 25. 26. 27. 28. The point group symmetry 6/m 2/10 2/m has symmetry content (a) 1,166 2,710] (2) 1463442. (૦) 1,1⁄36,111 (6) 6A;,6m,3m The intercepts of a crystal face from the vortex in a hexagonal crystal is 131, ୦୦82, (—)la3, ০০০. The Miller-Bravais indices of the said face will be (a) (1070) (b) (1011) ( (9) (0071) (d) (1100) Screw axes result from the simul- taneous application of which one of the following symmetry operations ? (a) Inversion and rotation (b) Rotation and translation (c) Translation and reflection (d) Rotation and inversion Monticellite belongs to which group of "silicates ? (a) Single chain silicate (b) Nesosilicate (c) Double chain silicate (५) Tectosilicate 29. 30. Match List I with List II and select the correct answer using the code given below the lists : List I List 11 (Common (Example structure type) of mineral) A. NaCl structure 1. Fluorite B. TiO, structure 2. Chromite C. AB,O, structure 3. Sylvite D. AX, structure 4. Pyrolusite Code : Be ৯ ৮ VD "0 డీ 5 (0) । अ: > (0.3 0 1 ଓ ଏ ‏ارت‎ 1 Consider the following statements regarding polymorphic reactions : Statement 1 : Some chemical com- pounds can exist in more than one struc- tural or atomic થા- rangements with no change in their chemi- cal composition Statement-—II: The reason why ೩ constant chemical composition may have different structural ar- rangements 15 the tendency of a crystal structure to minimize its internal energy 31; Which one of the following is correct in respect of above statements ? (a) Both statement I and statement II are true and statement II is the correct explanation of statement I (b) Both statement I and statement II are true and statement II is not the correct explanation of statement I (c) Statement I is true but statement II is false (6) Statement I is false but state- ment II is true Consider the following statements regarding the miscibility gaps found within the plagioclase feldspar series : 1. The three regions have been named in increasing anorthite content (കവ), as the peristerite gap, the Bdggild intergrowth region, and the Huttenlocher intergrowth region 2. These regions represent exsolu- tion phenomena on an extremely fine scale 3. Exsolution lamellae are respon- sible for the iridescence of plagioclase as a result of the presence of closely spaced lamellae of composition Ang and Any; in the peristerite gap Which of the statement(s) given above is/are correct ? (a) 1 only (b) 1 and 2 only (c) 1, 2 and 3 (d) 2 and 3 only A - BBSP-T-GHD 32. Which one among the following is NOT ೩ 2 : 1 layer silicates ? (a) Talc (b) Kaolinite (c) Phlogopite (d) Vermiculite 33. A garnet has composition 72] Mgo.9Mno.45Cag.15A12Si30 2. The mole percentages of grossular, almandine, spessartine and pyrope components in this garnet are (a) 15, 10, 20 and 55% respectively (b) 5, 50, 15 and 30% respectively (c) 5, 15, 25 and 55% respectively (d) 10, 20, 30 and 40% respectively 34. Consider the following “formalisms” in connection with color of minerals : 1. Crystal field theory 2. Molecular orbital theory 3. Band theory Which of the formalism(s) given above account for color in minerals ? (a) 1 only (b) 1 and 3 only ` (௦) 2 and 3 only (d) 1, 2 and 3 BBSP-T-GHD - A 10 35. Consider the following statements regarding alteration of olivine : 1. Serpentinization is the most wide- spread form of olivine alteration 2. The main alteration products of Mg-rich olivine are the three serpentine polymorphs : lizardite, chrysotile and antigorite together with brucite, talc and carbonates 3. Serpentinization may be expressed by the reaction 3Mg,SiO, + 4H,0 + 5102 = 2Mg3Si,05(OH)4 Which of the statement(s) given above is/are correct ? 8 (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (0) 1, 2 and 3 36. Which one of the following pairs is NOT correctly matched ? (a) Uniaxial positive : Quartz (b) Biaxial positive Hornblende (c) Isotropic Pyrope (d) Biaxial negative Biotite ડેટ 38. 39. The formation of a dome-like structure (involving felsic magmas) related to density inversion is called (a) Stock (b) Diapirs (c) Batholith (d) Tongues The evolution of a magma undergoing fractional crystallization depends upon © which of the following factor(s) ? 1. Initial magma composition 2. Type of -minerals crystallizing from the magma 3. Order of crystallization of min- erals 4. Proportion of crystallizing min- erals Select the correct answer using the code given below : (a) 4 only (b) 1 and 2 only (০). 1, 2 and 3 only (4) 1, 2, 3 and 4 As per IUGS classification, which one of the following statements is correct ? (a) Olivine-gabbro nd __troctolite contain equal amount of modal olivine Troctolite contains lesser amount of modal pyroxene than olivine- gabbro (b) 11 40. 41. 42. (૦) Troctolite contains much 1055 modal olivine than olivine-gabbro (0) Troctolite contains more than 95% of olivine Development of traps is a common . feature of flood basalt provinces. However, in rhyolite rocks, traps are not commonly developed. The most likely explanation for this is (a) Rhyolite lavas are less poly- merized (2) Rhyolite lavas have 51110೩ ற centage less than 45 wt.% (c) Rhyolite lavas are extremely viscous (ત) Rhyolite lavas form in subduction zone Which one of the following pairs is correctly matched ? (a) Graphic texture Basalt (0) Spinifex texture Komatiite (০) Perthitic texture Gabbro (d) Amygdaloidal Syenite structure Which one of the following ean be used to understand the stratigraphic top and bottom ? (a) Dyke (b) Sill (c) Pillow lava (d) Batholith A ¬ BBSP-T-GHD 43. 44. 45. BBSP-T-GHD - A Which one of the following phase diagrams has peritectic relation ? (a) Diopside-albite (9) Diopside-anorthite (c) Albite-anorthite (ત) Forsterite-silica The presence of sillimanite in a gabbro can be explained by the assimilation of (a) Limestone (b) Shale (c) Quartzite (d) Granite With respect to the formation of a Layered Igneous Complex (LIC), which one of the following conditions is NOT suitable ? Maintenance of convection-cur- rent cells in the magma chamber (a) (०) Fast nucleation rate of crystals (০) Broadly atectonic situation (4) Oscillatory crystallization 12 46. The camptonite is a common alkaline lamprophyre and with decreasing silica activity it grades into (a) Sannaites (b) Monchiquite (€) Fourchite (0) Monzonite 47. What is the likely reason why most magnesium komatiites are generally restricted to the early Pre-cambrian ? (a) Thermal regime necessary for high degree of melting may no longer exist (b) No mantle plume formed after Pre-cambrian (८) Subduction process did ୩୦୮ operate before Pre-cambrian (d) The density of komatiitic liquids increased after Pre-cambrian 48. Which one of the following state- ments regarding carbonatites is NOT correct ? (a), They represent magmatically formed carbonate rocks (b) They may host economic deposit of rare earth elements (c) They are commonly found at Mid Oceanic Ridges (4) They are associated with fenites 49. 50. Consider the following statements regarding metamorphic reactions : 1. Continuous metamorphic 1680- tions take place over a range of temperatures as the compositions of the participating minerals change 2. Discontinuous metamorphic reac- tions occur when the compositions of the minerals are fixed by the appearance of another mineral 3. Tie-line flip reactions are a type of continuous metamorphic reaction Which of the statement(s) given above is/are correct ? 9 (a) 1 and 2 only (b) 1 only (c) 2 and 3 only (4) 1, 2 and3 Consider the following statements regarding typical effects of rock meta- morphism : 1. Minerals and mineral assemblages originally not present in a rock may form, the new mineral assem- blages grow at the expense of old ones 2. The relative abundance of min- erals in a rock may systematically change and the new rock may have a different modal composi- tion 3. Metamorphic minerals will not undergo any systematic change in their composition 31] Which of the statement(s) given above is/are correct ? (a) 1 only (b) 2 only (c) 1 and 2 (d) 1 and 3 Match List I with List II and select the correct answer using the code given below the lists : List I List 11 (Type of (Typical metamorphism) metamorphic rock) A. Contact meta- 1. Blueschist, morphism eclogite, serpentinite B. Orogenic (subduction 2. Metabasalt, type) greenstone, metagabbro ઉ છદ তে and serpenti- nite D. Orogenic 3. Slate, phyllite, (collision type) schist, gneiss, न migmatite, greenschist, amphibolite, granulite 4. Hornfels, skarn Code : Ay ઉ . 9 ଓ) 4 1 ‏یئ‎ ‎(b) 4 2 1 3 ‏لھا‎ 3) 1 2.4. 4 (௫:59 2 1 4 A - BBSP-T-GHD 52. 53 54. Which one of the following statements regarding gneissosity is NOT correct ? (a) Gneissosity is a poorly developed planar fabric (b) Gneissosity is defined by compo- sitional layering (c) Gneissosity is commonly formed by metamorphic segregation/pro- cess (d) Gneissosity involves very fine grained minerals not visible to naked eye Randomly oriented crystals that cut across an earlier foliation is a typical texture of (a) Pre-kinematic crystals (0) Post-kinematic crystals (c) Syn-kinematic crystals (d) Inter-kinematic crystals Consider the following statements regarding development of ‘pressure shadow’ in a metamorphic rock : 1. Pressure shadows are areas of coarsely-recrystallized matrix ma- terial next to a porphyroblast 2. Pressure shadows develop in the region that was shielded from the maximum compressive stress during deformation by its proxi- mity to the rigid porphyroblast 3. Material probably migrates here by pressure solution BBSP-T-GHD - A 14 556: 56. Which of the statement(s) given above is/are correct ? (a) 1 and 2 only (b) 1 only (c) 2 and 3 only (4) 1, 2 and 3 An angular discordance between internal schistosity (S;) and external schistosity (52) is best indication of (a) Syn-tectonic porphyroblast growth (0) Pre-tectonic porphyroblast growth (c) Post-tectonic porphyroblast growth (ત) Porphyroblast growth unrelated to deformation The complete set of Pressure-Tempera- ture conditions that a rock now at the surface may have experienced during a metamorphic cycle from burial to metamorphism (orogeny) through uplift and erosion is called (a) Pressure-Temperature path (2) Pressure-Temperature-Time path (c) Pressure-Time path (ત) Temperature-Time path 57. Consider the following statements regarding cation-exchange metamorphic reactions : 1. This reaction type involves only a change in phase composition with no growth or dissolution of the phases themselves 2. It takes place in rocks with at least two minerals which are capable of cation-exchange with each other 3. Example of cation-exchange re- action is cordierite + garnet -೨ sillimanite + orthopyroxene Which of the statement(s) given above is/are correct ? 58. (a) 1 and 2 (b) 1 only (c) 2 and 3 (0 1 and 3 In a three-component triangular ACF diagram proposed by Eskola (1915), the F pseudo-component calculated on a molecular basis is equal to (a) FeO + MgO + MnO (b) FeO (c) MgO (ଏ) FeO + Fe,0; 15 60. 59. Match List I with List II and select the correct answer using the code given below the lists : List I (Regional metamorphic facies) A. Blueschist B. Eclogite C. Granulite D. Amphibolite Code : (a) 1 (೪): પ્ર (५) (3 (ଓ) 3 List 11 (Characteristic mineral for mafic protolith) 1. Hornblende 2. Omphacite 3. Glaucophane 4. Orthopyroxene ୩ 2 ಹ ~. ० Which one among the following pairs is NOT correctly matched ? Franciscan facies series (a) Buchan or Abukuma facies series (0) Contact facies series (০) (4) Sanbagawa facies series High pressure, low temperature Medium pressure regional Very low pressure High pressure, moderate temperature A ¬ BBSP-T-GHD 61. In a scanning electron microscope 62. photograph, the grain surfacial markings observed in beach sediments are (a) U shaped pits (0) Criss-cross pits (c) V-shaped pits (d) Squares and circles In the given textural maturity diagram of sandstone, the curves 1, 2 and 3 represent trends of different textural parameters. Which one of the fol- lowing represent the correct match of the parameters ? Stage of textural maturity టూ + પટા Submature [ Mature | [ Supermature | completed Yr | || 98 ମ yr ¦. 2⁄7 ¦ । ६.5 ¦ + ] 899] / 71 ¦ a8 8 ‏ےی‎ 4 ¦ ¦ Esso ¦ ¦ | ९००५६ ] ¦ ¦ 6 | ¦ ¦ Process_,.| ம + ¦ begins 0 [ணன Moderate High Extreme Kinetic energy ‏سو‎ (೩) 1 = sorting of framework grains, 2 = rounding of framework grains, 3 = removal of clay (0) 1=rounding of framework grains, 2 = sorting of framework grains, 3 = removal of clay (c) 1= removal of clay, 2 = sorting of framework grains, 3 = rounding of framework grains (6) 1 = removal of clay, 2 = rounding of framework grains, 3 = sorting of framework grains BBSP-T-GHD - A 16 64. Consider 63. Match List I with List II and select the correct answer using the code given below the lists : List I List 11 (Mass flow type) (Type of fluid) A. Liquefied flow 1.Non-Newtonian fluid B. Debris flow 2. Turbulent fluid C. Grain Flow 3. Bingham plastic D. Turbidity 4. Newtonian current fluid Code : ଏ ৮০ છે हि ^ 31 ‏توق‎ बु ல்‌ பதலை चा त ટ अ (5 1:84 the following statements regarding Chevron Marks : 1. They are made up of continuous open V marks arranged to form a straight ridge 2. The V forms open in the down current direction 3. Consistency of mud plays an important role in the genesis of Chevron Marks Which of the statement(s) given above is/are correct ? (a) 1 only (b) 1 and 2 (c) 2 and 3 (6) 1 and 3 65. 66. Which of the following statements regarding uses of trace fossils are correct ? 1. They serve as an indicator of relative sedimentation rate 2. They can indicate absolute age of sedimentary rocks 3. They can be used to mark any break in sedimentation 4. They can provide information about paleocurrent direction Select the answer using the code given below : (a) 1,3 and 4 (b) 1, 2 and 3 (c) 1 and 2 only (4) 2, 3 and 4 Consider the following statements regarding Hummocky cross-stratifica- tion : 1. It is characterized by undulating sets of cross-laminae 2. The sets are both concave-up and convex-up 3. The cross-bed sets cut gently into each other with curved erosional surfaces 17 67. 68. Which of the statement(s) given above is/are correct ? (a) 1 only (b) 1 and 2 only (c) 2 and 3 only (d) 1, 2 and 3 Which one of the following statements regarding ‘Thrombolites’ in carbonate rocks is NOT correct ? (a) These are non-layered clotted fabrics formed by coccoid cyano- bacteria These are often constituted of patches of micrite separated by spar-filled spaces (b) (c) These grade through undifferen- tiated boundstone to form stroma- tolites (4) These were primarily abundant during the Permian time Which one of the following is the least possible mechanism. to account for high abundance of matrix in quartz wacke ? (a) Quartz sand blown into a quiet water environment (b) (০) Wash over deposit during a storm Vadose infiltration of clays into sands (4) Diagenetic alteration of detrital feldspar and rock fragments A - BBSP-T-GHD 69. 70. 71. Match List I with List II and select the correct answer using the code given below the lists : List I List 11 (Geomorphic (Sedimentary feature) environment) A. Chenier plain 1. Glacier B. Sabkha 2. Eolian C. Ergs 3. Coastal mudflat with sand ridges D. Kames 4. Supratidal Code : Ac. 9 ‏و‎ € 09 (இம பல வை 41 (b) 1 2 3 દિ ર3 (દા 32 1 @) ‏پٹ‎ 04.42 Remnant ocean basins are shrinking ocean basins caught between colliding continental margins and/or arc-trench systems. Modern day example of it is (a) Persian Gulf (b) Red Sea (c) Santa Barbara basin (d) Bay of Bengal basin Which one of the following represents the correct order of the geomorphic subdivisions in an oceanic realm from shoreline to deep sea ? (a) Inner shelf — Abyssal Plain - Continental rise - Continental slope BBSP-T-GHD - A 18 72. (8) Inner shelf - Shelf break - Continental slope — Continental rise (০) Inner shelf - Shelf break - Continental rise - Continental slope (ત) Shelf break - Inner shelf - Continental slope — Abyssal plain The neomorphic spar is characterized by: 1. Irregular or curved intercrystalline boundaries, commonly with embayments 2. Very regular crystal-size distribu- tion and patchy development of coarse mosaic 3. Sharp, distinct boundaries to areas of neomorphic spar 4. Presence of skeletal floating in coarse spar grains Select the correct answer using the code given below : (a) 1 and 4 (b) 1 and 2 (c) 2 and 3 (d) 3 and 4 73. 74. The process of fossilization in which original pore spaces in the shell are impregnated with extra minerals is known as (a) Replacement (9) Permineralization (০) Carbonization (d) External mould Match List I with List II and select the correct answer using the code given below the lists : List I List II Allopatric population A. The homologous 1 genes that may not necessarily be iden- tical are known ೩5 2. Alleles B. A gene that હ suddenly and mutation spontaneously changes to a new allele is known as 4. Sympatric population C. Species separated by geographical barrier are referred as D. Species having same or overlapping geographical area are referred as Code : ୨୩୫୬ ୦୮୬ (a) 4 छ ] 2 (b) 4 1 3 2 (c) 2 3 1 4 (d) 2 1 3 4 19 15. 76. 77 Match List I with List 11 and select the correct answer using the code given below the lists : ত List I List 11 (Brachiopoda (Shape of genus) valve) A. Conchidium 1. Dorsiconvex B. Atrypa 2. Biconvex C. Hesperorthis 3. Convexo- concave D. Dictyoclostus 4: Plano: E. Herbertella . सक 5. Concavo- convex Code As 9 ୩ (೩) ‏ھ2‎ ৮৭৫০4 3 (b) 2.4 ಫಟ್‌ ಟ್‌ 3) (0) 3 5 4 1 2 (৫) 3 1 5 4 2 Which one among the following gastropods shell is characterized by the planispiral coiling ? (a) Natica (9) Turritella (c) Euomphalus (d) Pleurotomaria The most primitive type of dentition in bivalves is (a) Dysodont (9) Isodont (८) Taxodont (6) Pachydont A - BBSP-T-GHD 78. 79, BBSP-T-GHD - A Consider the following statements regarding the suture morphology of ammonoids : 1. Inflection on the suture line pointing upward (towards aperture direction) are the saddles, whereas the backward pointing inflection (opposite to aperture) are the lobes 2. In ceratitic sutures, the saddles are crenulated though the lobes are entire 3. In ammonitic sutures, both saddles and lobes are crenulated Which of the statement(s) given above is/are correct ? (a) 1 and 2 only (b) 2 only (c) 1 and 3 only (4) 1, 2 and3 The extreme of all heteromorphs in ammonites showing very long tubular shell coiled in a series of U-bends into an unlikely tangle is known as (a) Choristoceras (2) Lytocrioceras (c) Nipponites (d) Bochianites 20 80. 81. 82. Which one among the following pairs is NOT correctly matched ? (a) Eohippus : Dawn horse (2) Orohippus : Mountain horse (c) Equus : Modern horse (d) Mesohippus : Miocene Which one among the following pairs is NOT correctly matched ? : Late Pleistocene (a) Homo neanderthalensis (b) Gigantopithecus : Late Miocene (૦) Sivapithecus : Middle Miocene (0) Kenyapithecus : Pliocene The larger benthic foraminifera are major contributors to modern carbo- nate sedimentation, in modern tropical oligotrophic setting they can produce (a) 400 8 CaCO,/m? every year (b) 2000 8 CaCO;/m? every year (૦) 2800 & CaCO,/m? every year (6) 3200 8 CaCO,/m? every year 83. 84. Consider the following statements : Statement—I : Larger benthic fora- minifera are typically larger than 2mm in diameter and 3 1113 in volume and have complex internal struc- tures which are useful for biostratigraphy of Tethyan sediment | Statement -11 : As the developmental stages of foramini- ferid life history are preserved in the test, they are well suited to evolutionary studies Which one of the following is correct in respect of above statements ? (a) Both the statements are individu- ally true and Statement II is the correct explanation of Statement I Both the statements are individu- ally true but Statement II is not the correct explanation of Statement 1 (0) StatementI is true but State- ment II is false (०) StatementI is false but State- ment 11 is true (4) Which one of the following is NOT a Lower Gondwana plant fossil ? (a) Schizoneura (9) Gangamopteris (০) Brachyphyllum (ત) Phyllotheca 21 85. 86. 87. Biozone, the basic unit of biostrati- graphic classification is characterized by (a) Characteristic fossil or assem- blage of fossils (b) Characteristic lithology (c) Specific interval of time (d) Specific depositional environment A location where the lithological characteristics of the formation are clear and, if possible, where the lower and upper boundaries of formation can be seen is called (a) Auxiliary section (b) Type section (c) Lithodeme (d) Suite Match the commonly used elements in geochronology (List-I) with rock types wherein these elements are preferably used (List-II) and select the correct answer using the code given below the lists : List I List 11 (Element) (Rock type) 2. 340 1. Rocks younger than 50,000 years 08 | + 2. Rocks with alkali ୦. Rb feldspar and mica 3. Zircon bearing rocks 2. 1471 4. Basic rocks Code : હો ધિ છ છિ ଓ દ 1 4 0). 1 2 4 (ભ ત த்‌ ଓ) % (પત્રિ A - BBSP-T-GHD : 88. 89. 90. The Peninsular Gneiss 15 typically made up of which one of the follow- ing ? (a) (b) Quartzites and conglomerates Migmatitic gneisses alternating with bands of amphibolite and tonalites (c) Metamorphosed ultra-basic rocks interlayered with carbonates and argillaceous sediments (0) Charnockites and Khondalites Which one of the following is the northernmost craton of the Indian Shield concealed under the Indo- Gangetic Alluvium extending in the north up to the Himalaya and bounded by Son-Narmada fault against the Satpura Mobile Belt in the south and by the Great Boundary fault against the Aravalli Craton in the west ? (a) Mewar Craton (b) Dharwar Craton (c) Singhbhum Craton (d) Bundelkhand Craton The Dharwar Craton is ೩ classic greenstone-granite terrain. It is divided into Western and Eastern Dharwar Cratons. These two divisions are separated from each other by which one of the following ? (a) Closepet Granite close to Chitra- durga Shear Zone Peninsular Gneiss (b) (০) (d) Palghat-Cauvery Shear Zone Karur-Kambam Shear Zone BBSP-T-GHD - A 22 91. 92. 93. 94. Which one of the following is the oldest volcanic formation in India ? (a) Deccan Traps (0) Panjal Traps (c) Rajmahal Traps (d) Dhanjori Volcanics Which one of the following litho-unit of the Cuddapah Supergroup has diamond bearing horizon ? (a) Narji Limestone (b) Banganapalle Formation (c) Tadpatri Formation (d) Vempalle Formation The only carbonate litho-unit present within upper Vindhyan is (a) Kajrahat Limestone (2) Rohtas Limestone (c) Bhander Limestone (d) Koilkuntla Limestone The geological record of Late Creta- ceous transgression in the Narmada valley is present in (8) Trichinopoly Group (0) Kallamedu Formation (c) Bagh Group (d) Chikkim Formation 95. Marine intercalations in the basal part 96. 97 98. of Gondwana succession belongs to (a) Late Jurassic age (b) Late Triassic age (c) Early Permian age (d) Early Cretaceous age Which one of the following lithostrati- graphic unit represents deposition by glaciers ? (a). Barakar Formation യ) Talchir Formation (c) Karharbari Formation (ત) Kulti Formation Chromite deposits of Bushveld Com- plex, South Africa and Great dyke of Zimbabwe are the examples of (a) Stratiform 16005115 (b) Podiform deposits (c) SEDEX deposits (d) VMS deposits The process by which a new phase unmixes from a solid solution when it is cooled to a temperature below its solvus is known as (a) Annealing (b) Exsolution (c) Replacement (d) Deformation 23 99. 100. 101. Porphyry Cu-Mo deposits are asso- ciated with calc-alkaline or I-type magmas generated adjacent to (a) Mid-oceanic ridges (b) Subduction zones (c) Continental rifts (d) Oceanic islands The Olympic Dam deposit of South Australia is an example of (a) VMS deposit (৮) Unconformity-type deposit (c) IOCG deposit (d) SEDEX deposit Match List I with List 11 and select the correct answer using the code given below the lists : List I List 11 (Zone) (Mineral) A. Primary ore 1. Azurite B. Oxidized ore 2. Covellite C. Secondary sulfide 3. Chalcopyrite enrichment ঃ < 4. Limonite D. Gossan capping Code : A B ૮ (பத 0) @ 2 1 3 ‏ھ0‎ 3 1 2 4 ര” 3 2 1 4 A ¬ BBSP-T-GHD 102. 103. Consider the following statements regarding Banded Iron-Formation (310) : Statement—1 : Algoma type 8 are associated with volcanic rocks and are typically found in Archaean greenstone belts Statement - 2 : Superior type BIFs were deposited on continental platforms mainly during Palaeo- proterozoic Which of the statement(s) given above is/are correct ? (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2 Consider the following statements regarding ore deposits formed in sedi- mentary environments : 1. Ironstones are the iron rich sedi- mentary rocks with more than 15 wt % FeO 2. Manganese deposits are manga- nese oxide or carbonate-rich sedi- mentary rocks and are the world’s major source of Mn Which of the statement(s) given above is/are correct ? (a) 1 only (b) 2 only BBSP-T-GHD - A . 24 104. 105. 106. (c) Both 1 and 2 (d) Neither 1 nor 2 In a supergene ore, presence of malachite, azurite and chrysocolla indicates (a) Zone of oxidation (b) Zone of Secondary enrichment (c) Primary ore zone (d) Leached capping zone Consider the following statements regarding types of coal seams : 1. Concordant seams occur over large areas intercalated with strata of host sediments of the same age 2. Discordant seams typically occur above 8 stratigraphical uncon- formity and constitute the base of transgressive sediments Which of the statement(s) given above is/are correct ? (a) 1 only (b) 2 only (€) Both 1 and 2 (d) Neither 1 nor 2 Coal that breaks with a splintery or conchoidal fracture, is lusterless, con- tains wind-blown spores and pollens and burns with a long flame is (a) Boghead coal (b) Cannel coal (c) Anthracite (4) Lignite 107. 108. 109. Which one of the following coal/lignite fields does NOT belong to Gondwana period ? (a) Damodar valley (b) Mahanadi valley (c) Neyveli (d) Wardha valley Match List 1 with List II and select the correct answer using the code given below the lists : List I List II (Locality) (Deposit) A. Singrauli 1. Lead-zine B. Ingaldhal 2. Iron C. Dalli-Rajhara 3. Copper D. Sargipalli 4. €oal Code : ৰ AOR ಟಿ রা (క... 3:53 ® 1 1 1১) ପୁ 33 ಬ... 6 દ, 5 ৩৬ 1 (0). । ৮ డే Consider the following statements regarding subsurface water : 1. The thickness of the capillary zone vary inversely with the pore size of soil or rock 2. Expected capillary rise of water in silt is less than that of sand; with assumption that both formation have same porosity 25 110. 111. 112. Which of the statement(s) given above is/are correct ? (a) Both 1 and 2 (b) 1 only (c) 2 only (d) Neither 1 nor 2 In an area of 300 hectares (ha), the water table dropped by 5 71. If the porosity is 40% and the specific retention is 20%, what is the change in groundwater storage volume ? (a) 1500 ha.m (0) 900 18.71 (€) 600 ham (d) 300 ha.m A confined aquifer has hydraulic conductivity value of 30 m/day. What is its transmissivity if the saturated thickness of the aquifer 15 6m? (a) 5 m?/day (b) 5400 m3/day (૦) 180 m*/day (d) 1080 m3/day How much water can be produced by lowering the water table of an un- confined aquifer by 4 meters over an area of one square kilometre ? (aquifer porosity = 0-4 and specific retention = 0-15) (a) 10" m? (b) 10° m? (૦) 10° 713 (6) 107 713 A - BBSP-T-GHD 113. 114. 115. What will be the porosity of the rock, if it has void ratio of 0:25 ? (a) 75% (b) 50% (c) 25% (৫) 20% Which one of the following statements regarding porosity of sedimentary deposits is NOT correct ? (a) Porosity depends on the shape and arrangement of individual particles/grains (b) Porosity depends on the degree of cementation and compaction (c) Porosity increases with depth of burial in sedimentary rocks sub- ject to compaction (d) Well sorted sedimentary deposits have higher porosity than poorly sorted sedimentary deposits An aquifer has effective porosity (a) of 25%. Which one of the following is the correct relationship between average interstitial/linear velocity (V,) and Darcy velocity (v) ? (a) ‰ = 025৮ (9 Va = 4৮ (૦ ૪-2-57 (0) ‰ = + BBSP-T-GHD - A 26 116. 147; Which one of .the following state- ments regarding Darcy’s law is NOT correct ? (a) Specific discharge is equal to product of hydraulic conductivity and hydraulic gradient (b) Specific discharge is equal to the rate of flow of water through unit cross-sectional area of the medium, perpendicular to direc-: tion of groundwater flow (0) Specific discharge is equal to average interstitial/linear velocity (d) Specific discharge is proportional to the hydraulic gradient Which of the following statements regarding Reynolds number ৪916 correct ? 1. Reynolds number depends on fluid density 2. Reynolds number is independent _ of velocity of the fluid 3. Reynolds number depends on diameter of pipe or conduit 4. Reynolds number is independent of the dynamic viscosity of the fluid Select the answer using the code given below : (a) 1 and 2 only (b) 1, 2 and 3 (c) 1 and 3 only (d) 2 and 4 118. Which one of the following isotopes is used to estimate the age of ground- water ? (a) Tritium 6൬ (b) Deuterium (7H) (০) 160 ൫ 190 119. Consider the following statements regarding Ditch and Furrow method for artificial recharge of groundwater : 1. In the Ditch and Furrow method, water is distributed to a series of ditches or furrows 2. The ditches and furrows are shallow, flat bottomed and closely spaced Which of the statement(s) given above is/are correct ? (a) 1 only (b) 2 only (c) Neither 1 nor 2 (d) Both 1 and 2 27 120. The lithologic succession of an area as obtained from a borehole is given in the accompanying figure. A pit is required to be excavated for artificial recharge of groundwater. What should be the minimum depth of recharge pit ? 071 Clay 12m Sand 40m Hard ; crystalline rocks 100 m (a) 12m (b) 40m (c) 52m (d) 100 m A - BBSP-T-GHD SPACE FOR ROUGH WORK BBSP-T-GHD - A 28 SPACE FOR ROUGH WORK 29 A - BBSP-T-GHD SPACE FOR ROUGH WORK BBSP-T-GHD - A 30 SPACE FOR ROUGH WORK 31 A - BBSP-T-GHD SPACE FOR ROUGH WORK . BBSP-T-GHD - A 32