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MH SET 2023: 26 March, Paper II, Earth Atmospheric Ocean and Planetary Science

  • Date: 26 March 2023
  • Paper code: MAR-35223
  • Series: A
  • Language: Bilingual
  • 16 pages
MH SET 2023 question paper, 26 March 2023, Paper II, Earth Atmospheric Ocean and Planetary Science, page 1 of 16
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Test Booklet Code & Serial No.
                                                                                                                     A
       EARTH, ATMOSPHERIC, OCEAN AND PLANETARY SCIENCE
Signature and Name of Invigilator                                                         Seat No.
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      (Name) ................................................
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      (Name) ................................................                 OMR Sheet No.
MAR - 35223                                                                                        (To be filled by the Candidate)
Time Allowed : 2 Hours]                                                                                [Maximum Marks : 200
Number of Pages in this Booklet : 16                                                    Number of Questions in this Booklet : 100
                      Instructions for the Candidates
1.         Write your Seat No. and OMR Sheet No. in the space provided             1.
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2.         This paper consists of 100 objective type questions. Each question
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     Earth, Atmospheric, Ocean and Planetary Science
                                     Paper II
Time Allowed : 120 Minutes]                                   [Maximum Marks : 200
Note : This Paper contains Hundred (100) multiple choice questions. Each question
        carrying Two (2) marks. Attempt All questions.
1.   The correct order of succession of          5.   The first appearance datum (FAD)
     supercontinent formation amongst                 of which fossil species demarcate the
     the following is :                               Cambrian-Ordovician boundary ?
     (A) Rodinia–Pangea–Gondwana                      (A) FAD Trichophycus pedum
     (B) Columbia–Arctica–Atlantica                   (B) FAD Oryctocephalus indicus
     (C) Columbia–Rodinia–Pannotia                    (C) FAD Lapetognathus fluctivagus
     (D) Columbia–Gondwana–Rodinia                    (D) FAD Tetragraptus approximates
2.   The value of SAR is used in                 6.   Trace fossil Repichnia indicate
     classifying the water for :
                                                      which strategy ?
     (A) Domestic use
                                                      (A) Feeding        (B) Grazing
     (B) Irrigation use
                                                      (C) Locomotion (D) Escaping
     (C) Industrial use
                                                 7.   Which sponge species has spicules
     (D) (A) and (B)
                                                      composed of silicic acid ?
3.   Which stratigraphic unit of the
                                                      (A) Euplectella    (B) Sycon
     paleozoic succession of Lidar Valley,
                                                      (C) Leucosolenia (D) Petrosoma
     Kashmir Basin is unfossiliferous ?
                                                 8.   The term ‘coprolite’ is applied to :
     (A) Hapatnar Group
                                                      (A) Fossil shell
     (B) Muth Formation
                                                      (B) Fossil excreta
     (C) Zewan Formation
                                                      (C) Fossil traces
     (D) Fenestella shales
                                                      (D) Fossil bones
4.   Which of the following is considered
     a good index fossil for the Mesozoic        9.   Which of the following is not a body
     Biostratigraphy ?                                fossil ?
     (A) Forominifera                                 (A) Ptilophyllum
     (B) Conodont                                     (B) Neogloboquadrina
     (C) Ammonite                                     (C) Valcourea
                                                      (D) Ceratites
     (D) Echinoderm
                                             3                                       [P.T.O.
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10. Short range forecasting refers to            14. The electric potential of the
     forecasting the weather valid for :             electrosphere is positive with respect
                                                     to Earth and its magnitude is about :
     (A) 1 week to 2 weeks
                                                     (A) 1000 kV        (B) 3000 kV
     (B) 3 weeks to 4 weeks                          (C) 300 kV         (D) 30 kV
     (C) 1 to 3 days                             15. In regions when there is a net
     (D) 4 to 5 days                                 outflow of air, a situation referred
11. The average electrical conductivity              to as :
                                                     (A) Convergence (B) Advection
     of the Earth is about :
                                                     (C) Convection (D) Divergence
     (A) 10 s/meter
                                                 16. The dominant mechanism of heat
     (B) 1 s/meter                                   transfer in a hot spring is :
     (C) 10–3 s/meter                                (A) Radiation      (B) Convection
     (D) 10–9 s/meter                                (C) Conduction (D) Transmission
12. Stationary front occurs when :               17. The three principal stresses Sv, SH
                                                     and Sh represent the magnitudes of
     (A) Surface position of a front
                                                     vertical component of stress,
         moves so that warm air occupies             maximum horizontal stress and
         territory formerly covered by               minimum horizontal stress.
         cooler air                                  According to Anderson’s faulting
     (B) Cold continental polar air                  theory, a strike-slip fault movement
                                                     may be inferred if :
         actively advances into a region
                                                     (A) SH > Sh > Sv
         occupied by warm air
                                                     (B) Sh > SH > Sv
     (C) An active cold front overtakes              (C) SH > Sv > Sh
         a warm front                                (D) Sv > SH > Sh
     (D) Air flow on both sides of a front       18. The half-life of radioactive decay of
                                                     14C is 5730 years. An archaeological
         is neither towards the cold air
                                                     artifact containing wood had only
         mass nor towards the warm air
                                                     80% of the 14C found in a living tree.
         mass
                                                     The estimated age of the artifact
13. The Coriolis force at the equator is :           would be :
     (A) negative       (B) positive                 (A) 3208 years (B) 5730 years
     (C) infinite       (D) zero                     (C) 1846 years (D) 2303 years

                                             4
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19. Which of the following statements               22. The segments of oceanic crust
    is correct ?                                        between island arcs and continents
     (i)   Seismic reflection method                    are termed :
           depends on acoustic impedance                (A) Fore-arc basins
           contrast                                     (B) Island arc margins
                                                        (C) Back-arc basins
     (ii) Gravity method is sensitive to
                                                        (D) Sea mounts
          lateral density variations
                                                    23. The stress regime at the mid-ocean
     (iii) Magnetic method is sensitive to              ridges is tensional in character. This
           susceptibility contrast                      is supported by earthquakes due to :
    (iv) Electrical method depends on                   (A) Normal faulting
         electrical resistivity variations              (B) Strike-slip faulting
    (A) Only (i) is correct                             (C) High angle reverse faulting
    (B) Only (ii) and (iii) are correct                 (D) Opening of rift at the ridge crest
    (C) Only (iv) is correct                        24. The focal mechanism solution of an
    (D) (i), (ii), (iii) and (iv) are correct           earthquake depicts quadrants of :
20. A cross-plot between which two well                 (A) Dilatation
    logs show ‘‘football’’ effect/presence of           (B) Compression
    free gas ?                                          (C) Compression and dilatation
    (A) Neutron-Sonic                                   (D) Amount of energy released
    (B) Neutron-density                             25. Evidence for the Earth’s liquid outer
    (C) Density-Sonic                                   core comes from the fact that :
    (D) NMR-Neutron                                     (A) S-waves do not travel through
21. A single tone 5 kHz message signal                       the core
    is sampled with 12 kHz, 8 kHz and                   (B) A shadow zone for S-waves
    5 kHz. ‘‘Aliasing’’ effect will be                       exists beyond 103º from the
    observed in the reconstructed signal,                    earthquakes focus
    when the 5 kHz signal is sampled                    (C) Both (A) and (B)
    with :                                              (D) Neither (A) nor (B)
    (A) 12 kHz                                      26. How many total number of pixel
    (B) Both 12 kHz and 8 kHz                           values will a 8-bits satellite image
    (C) Both 8 kHz and 5 kHz                            have ?
    (D) Aliasing will not be observed in                (A) 64             (B) 128
         any case                                       (C) 256            (D) 7856

                                                5                                     [P.T.O.
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27. The ‘boundary model’ is sometimes              32. Which of the following statements
                                                       are correct with respect to
    also called as :                                   transportation of matter by stream ?
     (A) Topological data model                        (i)   Dissolved matter is transported
     (B) Temporal data model                                 in the form of chemical ions
     (C) Topological discrete model                    (ii) Sand, gravel and larger
                                                            particles move as bed load
     (D) Temporal discrete model
                                                       (iii) Clay and silt are carried as
28. In the process of image classification
                                                             suspended load
    which of the following methods
                                                       (iv) Generally, the bed load is the
    result in a greater accuracy of classes                 largest
     within an image actually matching                 Codes :
     land use patterns on the ground ?                 (A) (i) and (ii) only
     (A) Automated                                     (B) (ii) and (iii) only
     (B) Unsupervised                                  (C) (i), (ii) and (iii) only
     (C) Supervised                                    (D) (iii) and (iv) only
     (D) Robotic                                   33. Match the following :
29. Satellite data stores pixel                                    List–I (River)
    information band by band for each                  (a) Indus
    line, or row, of the image is ..........           (b) Ganga
    data format.                                       (c) Brahmaputra
     (A) BIL            (B) BIP                        (d) Cauvery
     (C) BSQ            (D) BQR                              List–II (Tributary)
30. Which of the following is small scale              (i)   Raga Zangbo
    Aerial photo ?                                     (ii) Herangi
     (A) 1 : 10000      (B) 1 : 25000                  (iii) Shiger
     (C) 1 : 50000      (D) 1 : 250000                 (iv) Alaknanda
31. What is the wavelength               of            Codes :
    ultraviolet spectrum ?                                   (a)    (b)   (c)   (d)
     (A) 0.3 to 0.4 micrometer                         (A) (iii) (ii)     (i)   (iv)
     (B) 1 to 300 millimeter                           (B) (iii) (iv) (i)       (ii)
     (C) 0.4 to 0.7 micrometer                         (C) (ii) (iv) (iii) (i)
     (D) > 300 centimeter                              (D) (iii) (i)      (ii) (iv)
                                               6
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34. Which     one     of    the   following         37. Given below are two statements,
                                                        Assertion (A) and Reason (R). Read
    statements is not correct about soils
                                                        the statements carefully and choose
    of Extra-Peninsular India ?                         the correct answer from the codes
    (A) These soils are mainly found in                 given below :
                                                        (A) Ozone is concentrated in
         river valleys and deltas
                                                             stratosphere at the height of
    (B) These soils have been formed by                      about 30 km.
         the decomposition of rock in situ              (R) At 30 km height in the
                                                             atmosphere there is enough
    (C) They are deep and constitute                         microwave radiation necessary
         some of the most fertile tracts                     to produce atomic hydrogen.
         of the country                                 Codes :
                                                        (A) Both (A) and (R) are true and
    (D) These soils are often referred to                    (R) is the correct explanation of
         as transported or azonal soils                      (A)
35. Amongst the listed ecosystems,                      (B) Both (A) and (R) are true and
                                                             (R) is not the correct
    which one has the highest net                            explanation of (A)
    primary production ?                                (C) (A) is true but (R) is false
    (A) Estuaries (tidal)                               (D) (A) is false but (R) is true
                                                    38. Given below are two statements
    (B) Midlatitude forest
                                                        Assertion (A) and Reason (R). Read the
    (C) Midlatitude grassland                           statements carefully and choose the
    (D) Lakes and streams                               correct codes from those given below :
                                                        (A) Raised shorelines are common
36. If the surface temperature of the air                    along the continental and
    parcel is 30 degree Celsius and the                      island coasts of Pacific Ocean.
    moist adiabatic lapse rate 7 degree                 (R) In these regions tectonic
                                                             processes are active along the
    Celsius/km, what will be the                             mountain and island arcs.
    temperature of the air parcel at 4                  Codes :
    km     altitude        for    a   lifting           (A) Both (A) and (R) are true and
                                                             (R) is the correct explanation of
    condensation level of 2 km ?
                                                             (A)
    (A) –6 degree Celsius                               (B) Both (A) and (R) are true and
    (B) –4 degree Celsius                                    (R) is not the correct
                                                             explanation of (A)
    (C) 0 degree Celsius
                                                        (C) (A) is true but (R) is false
    (D) 6 degree Celsius                                (D) (A) is false but (R) is true
                                                7                                     [P.T.O.
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39. Where the shoreline is straight for          44. An .............. is a layer or layered
    many kilometers littoral drift moves             sequence of rock or sediment
    the sand along the beach resulting
                                                     comprising one or more geological
    in the formation of :
    (A) Pocket beach                                 formations that contains water and
    (B) Sandspit                                     is able to transmit significant
    (C) Abrasion platform                            quantities of water under an
    (D) Stack                                        ordinary hydraulic gradient.
40. Which one of the following schist belt           (A) Aquitard          (B) Aquiclude
    does not belong to Dharwar craton ?
                                                     (C) Aquifer           (D) Aquifuge
    (A) Shimoga schist belt
    (B) Nuggihalli schist belt                   45. In which zone groundwater fills all
    (C) Gangpur schist belt                          the interstices ?
    (D) Sargur schist belt                           (A) Capillary zone
41. Which of the following schist belt is            (B) Soil zone
    the youngest ?                                   (C) Vadoze zone
    (A) Dharwar
                                                     (D) Zone of saturation
    (B) Sargur
    (C) Wynad                                    46. What is the residence time of water
    (D) Sathyamangalam                               in Atmosphere ?
42. Global scale events at ~1.8 Ga and               (A) 20 days           (B) 30 days
    0.9 Ga refer to :                                (C) 9 days            (D) 50 days
    (A) Amalgamation of supercontinents
                                                 47. A detension basin for flood control
        Columbia and Rodinia
    (B) Amalgamation of supercontinent               is the one which is provided with :
        Columbia and fragmentation of                (A) Uncontrolled outlet and
        Rodinia                                           spillway
    (C) Fragmentation of supercontinents             (B) Uncontrolled outlet but
        Columbia and Rodinia                              uncontrolled spillway
    (D) Fragmentation of supercontinent
        Columbia and amalgamation of                 (C) Controlled           outlet     but
        Rodinia                                           uncontrolled spillway
43. Which of the following is not true               (D) Controlled outlet and spillway
    for Komatiites ?                             48. Intensity of an earthquake is
    (A) They are associated with                     measured by :
        greenstone belts
                                                     (A) Seismograph
    (B) They are of Archaean age
    (C) They are ultramafic lavas                    (B) Richter scale
    (D) They are characterized by                    (C) Modified Mercalli scale
        ophitic texture                              (D) Derivatograph
                                             8
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49. Read the following statements and           53. Porphyry copper deposits are
    choose the correct answer from the              associated with
                                                    (A) Mid-oceanic ridges
    codes given below :
                                                    (B) Subduction zones
    (i) The movement of mineral                     (C) Continental rifts
         nutrients in an ecosystem is               (D) Back arc basins
         unidirectional in nature               54. Which one of the following is an ore
    (ii) The movement of energy in an               of platinum group of elements
         ecosystem is cyclic in nature              (PGE) ?
                                                    (A) Sperrylite     (B) Digenite
    Codes :
                                                    (C) Dioptase       (D) Bornite
    (A) Both (i) and (ii) are true              55. Commercial banded iron formations
    (B) Both (i) and (ii) are false                 of India are mostly of :
    (C) (i) is true but (ii) is false               (A) Palaeozoic age
    (D) (i) is false but (ii) is true               (B) Mesozoic age
50. Placers formed upon hill slopes or              (C) Proterozoic and Archaean age
                                                    (D) Cenozoic age
    along the foot hills from minerals
                                                56. Match the following :
    released from a nearby source rock
                                                                    I
    are called :                                    (1) Cumulus texture
    (A) Alluvial placers                            (2) Exsolution texture
    (B) Eluvial placers                             (3) Caries texture
    (C) Beach placers                               (4) Cockade texture
    (D) Aeolian placers                                               II
51. Nickel-Copper sulphide deposits of              (i) Banding and crustification in
                                                          open space
    Insizwa, South Africa and Sudbury,
                                                    (ii) Protuberances of replacing
    Ontario, Canada are the examples                      minerals with replaced host
    of :                                            (iii) Spindles or lamellae of one
    (A) Early magmatic dissemination                      mineral in another
    (B) Early magmatic segregation                  (iv) Aggregates of minerals with
                                                          non-penetrative      mineral
    (C) Residual liquid segregation
                                                          boundaries
    (D) Immiscible liquid segregation               Codes :
52. Volcanic hosted massive sulphide
                                                         (1)   (2)   (3)   (4)
    (VMS) deposits mostly associated
    with felsic volcanic rocks are called           (A) (iv) (iii) (ii) (i)
    as :                                            (B) (iii) (iv) (ii) (i)
    (A) Kuroko-type (B) Besshi-type                 (C) (ii) (iii) (i)     (iv)
    (C) Cyprus-type (D) Noranda-type                (D) (iii) (ii)   (i)   (iv)
                                            9                                     [P.T.O.
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57. Which of the following is the best            62. Which of the following statements
    mineral for fluid inclusion                       is/are true for the major principal
                                                      layers of oceanic water ?
    thermometry ?
     (A) Chalcopyrite (B) Magnetite                   (i)   a thin upper layer of warm,
                                                            well-stirred water
     (C) Wolframite    (D) Quartz
58. Which of the following states of                  (ii) a thick mass of deeper, colder
                                                           water that is relatively calm and
    India is the largest producer of
                                                           slow-moving
    Lignite ?
                                                      (iii) a thick upper layer of warm
     (A) Gujarat       (B) Tamil Nadu
                                                            well-stirred water
     (C) Rajasthan     (D) Assam
                                                      (iv) a thin mass of deeper, colder
59. Copper in a calcareous environment
                                                           water which is well-stirred
    is :                                                   water
     (A) Mobile                                       (A) (ii) and (iii)
     (B) Immobile                                     (B) (i) and (ii)
     (C) Sometimes    mobile         and              (C) (i) and (iii)
         sometimes immobile                           (D) (ii) and (iv)
                                                  63. About how much concentration of
     (D) Partially mobile
                                                      dissolved salt (NaCl) present in the
60. Saturation vapour pressure in air :               open ocean ?
     (A) Increases   linearly       with              (A) 10 g of dissolved salt per kg of
         temperature                                       water
     (B) Increases non-linearly with                  (B) 20 g of dissolved salt per kg of
         temperature                                       water
                                                      (C) 30 g of dissolved salt per kg of
     (C) Decreases linearly         with
                                                           water
         temperature                                  (D) More than 100 g of dissolved salt
     (D) Decreases non-linearly with                       per kg of water
         temperature                              64. What should be the height of the
61. A significant proportion of solar rays            submarine volcanic mountain to be
    cannot penetrate in the Ocean upon                called as seamount ?
                                                      (A) Minimum 1000 m
    depth of :
                                                      (B) Between 1000 m – 500 m
     (A) 50 m          (B) 15 m
                                                      (C) Between 100 m – 500 m
     (C) 20 m          (D) 200 m                      (D) Less than 100 m
                                             10
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65. Which of the following given                  68. The ground beneath a large lake
     statements is/are correct ?                       consists of a 50 m thick deposit of

     (i)   Exclusive economic zone extent              clay with a rock substratum. The bed
                                                       of the lake is flat and 20 m depth.
           seaward upto 200 nautical
                                                       The action of geological processes
           miles from the baseline
                                                       generates clay in suspension which
     (ii) Contiguous       zone   extends
                                                       in a very short time form a 2 m thick
           seaward upto 24 nautical miles              layer of sediments that completely
           from the baselines                          covers the bottom of the lake.
     (iii) Territorial sea extend seaward              Assuming the free water surface
           upto 10 nautical miles from the             remains unchanged, determine the
           baseline                                    total vertical stress in the original
     (A) (i) and (iii)                                 situation.

     (B) (i) and (ii)                                  Given : The saturated unit weight
                                                       of the clay is constant and equal to
     (C) (ii) and (iii)
                                                       rsat = 20 kN/m3.
     (D) (i), (ii) and (iii)
                                                       The unit weight of water is
66. What is the spreading rate of slow
                                                                       rw = 10 kN/m3.
     spreading ridge ?
                                                       The rock substratum is impervious
     (A) 8-16 cm/year
                                                       for practical purpose. The surface of
     (B) 40-80 mm/year
                                                       the water in the lake is taken as the
     (C) 10-40 mm/year
                                                       origin of the depth axis z.
     (D) 16-24 cm/year
                                                       (A) 400 kPa         (B) 810 kPa
67. Adding ............. to lime or cement             (C) 1200 kPa        (D) 1600 kPa
     reduces swelling and improve                 69. Clay with ................ of iron oxides
     engineering properties of expansive               when burnt produces brick of buff
     soils.                                            colour.
     (A) Bitumen          (B) Anhydrite                (A) 2 to 3%         (B) 3 to 6%
     (C) Bauxite          (D) Fly ash                  (C) 6 to 8%         (D) 8 to 12%

                                             11                                        [P.T.O.
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70. Features given below are diagnostic            72. Using Stokes equation for settling
    to which sedimentary environment ?                  velocity estimate the maximum
    Tectonic setting : Formed in very                   diameter of silica grain that exhibit
    deep water basin, trench, along                     laminar flow in water at 20ºC
    ophiolites, epicratonic basins or as                assuming that silica grain Reynolds’
    starved      of    clastic     debris,              number is < 1.
    accumulated thick sequences of                      Given :
    chalk, cherts or black shales.                     Density of silica = 2.65 g/cm3
    Geometry : Form vast, thin, tabular                 Density of water = 1.0 g/cm3
    sheets, in fault--bounded basins it              Viscosity of water = 0.01 g/cm/sec
    can reach thousands of meters in               Acceleration due to gravity = 981 cm/sec2
    thickness                                           (A) 103.2 m        (B) 204.1 m
    Typical sequence : Homogeneous,                     (C) 402.1 m        (D) 322 m
    thin bedded, laminated chalk, chert            73. A rock with < 1 mm separation in
    or shales.                                          the joint gouge with 4 rating is
    Sedimentology : Chalks, opaline                     termed as ............, that can be
    silica,    clay     minerals       are              excavated with very hard ripping as
    predominant, Minor authigenic                       per the Rippability Chart of Weaver
                                                        (1975).
    minerals, volcanic and eolian dust,
    phosphatic fragment. Extensive                      (A) Very good rock
    bioturbation and burrowing.                         (B) Good rock
                                                        (C) Fair rock
    Fossils : Planktonic microfossil,
                                                        (D) Poor rock
    siliceous or phosphatic microfossils.
                                                   74. The marine isotope stage 5 problem
    (A) Tidal
                                                        refers to the timing of penultimate
    (B) Pelagic
                                                        interglacial which appears to have
    (C) Continental shelf                               begun 10 thousand years in advance
    (D) Deltas                                          of :
71. A galena grain of diameter 0.5 mm                   (A) Younger Dryas
    falls in water with a settling velocity             (B) Last interglacial
    of 8.27 in/s. Calculate the Froude                  (C) Last glaciation
    Numbers for the galena grain.                       (D) Solar forcing
    Ps = 7.5 g/cm3                                 75. The little Ice Age cold event during
    g = 981 cm/sec2                                     Holocene was abruptly followed by :
    Pf = 1 g/cm3                                        (A) Holocene cooling
       = 0.01 g cm–1 sec–1                              (B) Mesopotemia
    (A) 6.99           (B) 7.09                         (C) Medieval Warming
    (C) 8.99           (D) 6.01                         (D) Younger Dryas

                                              12
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76. The final closure of the seaway              80. The heights and widths of the mid-
    between North and South Americas                 oceanic ridges with reference to the
    may have laid to strengthening of                abyssal plane is of the order :
    the Gulf stream delivering more                  (A) 6 km and 1500 km, respectively
    moisture to feed snow accumulation               (B) 2.5 km and 3000 km,
    at the northern high latitude                         respectively
                                                     (C) 3 km and 500 km, respectively
    leading to :
                                                     (D) 3000 km and 1000 km,
    (A) Ice Age
                                                          respectively
    (B) Interglacial Warming
                                                 81. The heat flux in the ‘X’ direction (9X)
    (C) Cooling of Pacific                           is proportional to the magnitude of
    (D) Heating of Indian Ocean                      temperature change across a unit
77. Mark the correct order of stages from            distance in ‘X’ direction. If ‘K’ is
    older to younger during the                      thermal conductivity of the material,
    Holocene period :                                then the heat flux can be expressed
    (A) Boreal–Pre-Boreal–Subboreal                  as :
                                                     (A) 9X = (dT/dx)/K
    (B) Subatlantic–Atlantic–Subboreal
                                                     (B) 9X = –K(dT/dx)
    (C) Boreal–Atlantic–Subboreal
                                                     (C) 9X = (dT/dx)
    (D) Subatlantic–Subboreal–Preatlantic
                                                     (D) 9x = dT(dx/K)
78. The negative Bouger anomaly                  82. A fold with interlimb angle of zero
    across the Mid-Oceanic ridges is due             is :
    to :                                             (A) Gentle         (B) Open
    (A) Ridge Topography                             (C) Tight          (D) Isoclinal
    (B) Hot mantle convergence                   83. Identify the Ramsay fold type :
    (C) Hot mantle surrounded by cold
         mantle
    (D) Ridge push mechanism
79. The Yilgarn shield and Pilbara
    shield comprises significant part of
    the older cratonic shields of the
    continent :
                                                      (A) Class 1A and Class 2
    (A) Australia
    (B) Africa                                        (B) Class 1B and Class 2
    (C) South America                                 (C) Class 1C and Class 1A
    (D) Canada                                        (D) Class 1A and Class 1B

                                            13                                      [P.T.O.
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84. Vertical faults have throw but do not         90. The characteristic of common
    have ..........                                   orogenic belts (Barrovian type),
    (A) Heave          (B) Strike slip                where the sequence is Zeolite facies
    (C) Dip slip       (D) Rake                           Prehnite-pumpellite facies
85. In an S-tectonite the strain ellipsoid            Greenschist facies      Amphibolite
    will be :                                         facies   Granulite facies are formed
    (A) Prolate finite strain                         represent the metamorphic series :
    (B) Plane strain                                  (A) Medium P/T series
    (C) Oblate finite strain                          (B) High P/T series
    (D) Infinite plane strain
                                                      (C) Both (A) and (B)
86. A rock having composition-
                                                      (D) Low P/T series
    Nepheline-olivine-clinopyroxene-
    plagioclase known as :                        91. The process by which a solid melts
    (A) Tephrites      (B) Basanite                   to a liquid and another solid, both
    (C) Troctolite     (D) Olivinenorite              of different composition than the
87. The reaction : Tremolite + Calcite                original is known as :
    + Quartz = Diopside + H2O + CO2 is a :            (A) Congruent melting
    (A) Net-Transfer reaction                         (B) Incongruent melting
    (B) Mixed volatile reaction                       (C) Eutectic melting
    (C) Both (A) and (B)                              (D) Equilibrium melting
    (D) Exchange reaction                         92. If the groundmass of a porphyritic
88. The presence of galucophane and                   texture in a rock is hemicrystalline,
    jadeite indicate :                                the texture is known as :
    (A) High pressure and low                         (A) Vitrophyric
         temperature                                  (B) Felsophyric
    (B) Low pressure and high                         (C) Glomerophyritic
         temperature
                                                      (D) Mesostasis
    (C) Low pressure and low
                                                  93. Which of the following rocks is
         temperature
                                                      dominantly         composed        of
    (D) High pressure and high
         temperature                                  clinopyroxene and garnet, mafic in
89. The snowball garnet are the product               bulk composition and equilibrated
    of :                                              under high pressure and low
    (A) Dynamic metamorphism                          geothermal gradient conditions in
    (B) Cataclastic metamorphism                      the lithospheric mantle ?
    (C) Dynamothermal metamorphism                    (A) Eclogite       (B) Tinguaite
    (D) Plutonic metamorphism                         (C) Pyroxenite (D) Alkali Basalt
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94. This trace element is mostly                  97. Which of the following statements
    concentrated in the crust and
    substitute for a major element in                 is true ?
    feldspar, muscovite, biotite and sodic            (A) Oxidation of Mn (II) to Mn (IV)
    plagioclase.
                                                          is required for manganese ore
    (A) Nickel         (B) Neodymium
    (C) Rubidium       (D) Calcium                        precipitation
95. Consider the following statements :               (B) Reduction of Mn (IV) to Mn (II)
    Statement–1 : The ratio of Ni : Mg
                                                          is required for manganese ore
    is highest in early formed crystals
    like olivine and shows a steady                       precipitation
    decline in late formed minerals.
                                                      (C) Manganese ore precipitation is
    Statement–2 : The nickel ion has
    essentially the same radius as                        independent of redox conditions
    magnesium.                                        (D) Both (A) and (B) are correct
    Which of the following is correct with
    respect to the above statements ?             98. Higher amounts of which of the
    Codes :                                           following isotopes indicate plume
    (A) Both      statement–1         and             related enriched mantle origin of
         statement-2 are true and
         statement-1 is the correct                   early Deccan volcanic rocks.
         explanation of statement-2                   (A) 87Sr/86Sr
    (B) Both      statement-1         and
         statement-2 are true and                     (B) 87Rb/86Rb
         statement-1 is not the correct               (C) 3He/4He
         explaination of statement-2
                                                      (D) 187Os/188Os
    (C) Statement-1 is true but
         statement-2 is false                     99. Solid angle is an angle between at
    (D) Statement-1 is false but                      least :
         statement-2 is true
96. 206 Pb/238U versus 207Pb/235U ratios              (A) Two lines       (B) Three lines
    when plotted yield concordant ages,               (C) Two facies      (D) Three facies
    also indicate :
                                                  100. Which of the following have curved
    (A) Pb loss event
    (B) Alteration event                              crystal facies ?
    (C) Loss or gain of radiogenic lead               (A) Hypersthene (B) Actinolite
    (D) No loss or gain of radiogenic
         lead                                         (C) Siderite        (D) Lepidolite

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ROUGH WORK




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Source: Savitribai Phule Pune University. Question paper published by Savitribai Phule Pune University.