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Delhi University Entrance Test (DUET) 2020 Previous Year Question Paper With Answer Key

This post was last modified on 27 December 2020

This download link is referred from the post: DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA


Topic:- GEO MPHIL S2

  1. Why do conjugate faults show opposite senses of slip? Select the correct explanation from below:
    1. Orientation of stress axes (σ1, σ2, and σ3) are opposite for the two conjugate fault planes
    2. σ2 becomes vertical for one of the two conjugate planes
    3. --- Content provided by FirstRanker.com ---

    4. both the fault planes are oriented symmetrically with respect to σ1, but in opposite sense
    5. σ1 and σ2 axes swap their position after some amount of deformation

    Correct Answer :- both the fault planes are oriented symmetrically with respect to σ1, but in opposite sense

  2. In simple shear, the angle between the longest (λ1) axis of the finite strain ellipsoid and the shear direction (θ) varies with the amount of shear strain (γ) according to which of the following relationships?
    1. θ increases as γ increases
    2. --- Content provided by FirstRanker.com ---

    3. θ decreases as γ increases
    4. θ remains constant as γ increases
    5. these two parameters have no predictable relationship

    Correct Answer :- θ decreases as γ increases

  3. --- Content provided by FirstRanker.com ---

  4. In a multilayered rock, the viscosity ratio of the competent and incompetent layers (μ1/ μ2) is high and the packing distance between layers (n) is low. What is the most likely structure that will develop in such a system under layer-parallel shortening?
    1. Kink fold
    2. Cuspate-lobate fold
    3. Ptygmatic fold
    4. no folding - only homogeneous thickening of layers

    Correct Answer :- Kink fold

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  5. Brittle deformation of rocks is favoured at a shallow depth, whereas ductile flow takes place at greater depth because
    1. brittle deformation of rocks leads to increase in volume
    2. ductile deformation is favoured only in rocks with smaller grain size
    3. ductile deformation can take place only in presence of a fluid phase
    4. 'e formation caccur only at high temperature
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- brittle deformation of rocks leads to increase in volume

  6. Which of the following shows a correct sequence of recrystallization mechanism in quartz with increasing temperature?
    1. Subgrain Rotation - Bulging - Grain Boundary Migration
    2. Bulging Grain Boundary Migration - Subgrain Rotation
    3. Bulging - Subgrain Rotation - Grain Boundary Migration
    4. --- Content provided by FirstRanker.com ---

    5. None of these

    Correct Answer :- Bulging - Subgrain Rotation - Grain Boundary Migration

  7. Trapezoid shaped boudins are characteristically found in
    1. extension fracture boudinage
    2. symmetric shear fracture boudinage
    3. --- Content provided by FirstRanker.com ---

    4. asymmetric shear fracture boudinage
    5. post-boudinage deformation

    Correct Answer :- symmetric shear fracture boudinage

  8. If, in a folded layered sequence, thinner layers show smaller folds and thicker layers show larger folds, the fold structure will be called:
    1. disharmonic fold
    2. --- Content provided by FirstRanker.com ---

    3. arrowhead fold
    4. polyclinal fold
    5. fan fold

    Correct Answer :- disharmonic fold

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  10. Geostrophic currents
    1. flow inside the mantle
    2. are controlled by a balance between pressure gradient force and Coriolis deflection
    3. are controlled by ocean's tropic levels
    4. generated due to tidal action of moon

    Correct Answer :- are controlled by a balance between pressure gradient force and Coriolis deflection

    --- Content provided by FirstRanker.com ---

  11. Porosity of a formation is summation of:
    1. Hydraulic conductivity and Transimissivity
    2. Specific storage and Specific retention
    3. Specific retention and Specific yield
    4. Hydraulic conductivity & Transmissivity
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- Specific retention and Specific yield

  12. Conodonts are useful microfossils in the biostratigraphic subdivision of
    1. Archean
    2. Cenozoic
    3. Cretaceous
    4. --- Content provided by FirstRanker.com ---

    5. Paleozoic

    Correct Answer :- Paleozoic

  13. δ18O of Mixed layer planktic foraminiferal test formed during a glacial period would be
    1. Higher compared to that formed during interglacial period
    2. Equal to that of formed during interglacial period
    3. --- Content provided by FirstRanker.com ---

    4. Lower compared to that formed during interglacial period
    5. None of these

    Correct Answer :- Higher compared to that formed during interglacial period

  14. Why was Paleomagnetism so important in discovering plate tectonics?
    1. it illustrated the location of the North Pole
    2. --- Content provided by FirstRanker.com ---

    3. It illustrated sea floor spreading
    4. it allowed measurement of mountain building rates
    5. It allowed the depth of the oceans to be measured

    Correct Answer :- It illustrated sea floor spreading

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  16. A polar wandering curve:
    1. shows that the magnetic poles wandered relative to fixed continents
    2. shows that the rotational poles wandered to fixed continents
    3. shows that the continents wandered relative to generally-fixed pole positions
    4. is a graph of the Mercalli Index

    Correct Answer :- shows that the continents wandered relative to generally-fixed pole positions

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  17. The 'Lehmann discontinuity' in the Earth is identified by
    1. 5-6% decrease in P and S wave velocity
    2. 3-4% increase in P and S wave velocity
    3. 5% decrease in density
    4. 5% increase in S wave velocity
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- 3-4% increase in P and S wave velocity

  18. Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A: Assemblage zones are not good for intercontinental correlation. Reason R: They are very much environmentally controlled. In light of the above statements, choose the correct answer from the options given below
    1. R explains A
    2. R does not explain A
    3. A and R are false
    4. --- Content provided by FirstRanker.com ---

    5. R is false

    Correct Answer :- R does not explain A

  19. In steady state/equilibrium groundwater flow situation, the water table head during pumping:
    1. Does not change with time
    2. Changes with time
    3. --- Content provided by FirstRanker.com ---

    4. Changes without time
    5. Remains constant

    Correct Answer :- Does not change with time

  20. For unconfined aquifer, the storage coefficient is approximately equal to:
    1. Transmissivity
    2. --- Content provided by FirstRanker.com ---

    3. Intrinsic permeability
    4. Specific retention
    5. Specific yield

    Correct Answer :- Specific yield

  21. --- Content provided by FirstRanker.com ---

  22. Preservation of fossils represent
    1. Stagnation deposits
    2. Obrution deposits
    3. Concentration deposits
    4. Conservation traps

    Correct Answer :- Conservation traps

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  23. Which of this typically represents elastic scattering?
    1. Backscattered electrons
    2. Auger electrons
    3. Secondary electrons
    4. Heating caused by electron beam-matter interaction
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- Backscattered electrons

  24. In-phase diffraction of any electromagnetic wave by a regularly spaced grating is
    1. Reciprocal and normal
    2. Only reciprocal
    3. Only normal
    4. --- Content provided by FirstRanker.com ---

    5. Destructive interference

    Correct Answer :- Reciprocal and normal

  25. Relationship between energy of characteristic X-ray and atomic number is defined by
    1. Mosely's Law
    2. Steno's Law
    3. --- Content provided by FirstRanker.com ---

    4. Beers Law
    5. Harper's Index

    Correct Answer :- Mosely's Law

  26. This cannot provide the width of distribution around a central tendency of any dataset
    1. Arithmetic average
    2. --- Content provided by FirstRanker.com ---

    3. Standard deviation
    4. Variance
    5. Both Arithmetic average and variance

    Correct Answer :- Arithmetic average

  27. --- Content provided by FirstRanker.com ---

  28. The value of "Hue" in the Munsell notations used for colour estimations refers to
    1. Red, yellow, blue colours
    2. Lightness of the colours
    3. Strength of the colours
    4. All of these

    Correct Answer :-

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  29. Which of the following in petrographic criteria suggests the advanced stage of pedogenic carbonate development?
    1. Few calcans and micrite
    2. Nodules and calcans
    3. Recrystallised nodules and microspars
    4. Micrite in the groundmass
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- Recrystallised nodules and microspars

  30. Removal of organic matter, carbonate, and free iron is required for of the particles during grain size.
    1. Flocculation
    2. Lithification
    3. Dispersal
    4. --- Content provided by FirstRanker.com ---

    5. Cementation

    Correct Answer :- Dispersal

  31. Which of the following sediment size refers to fine clay fraction?
    1. < 2 mm
    2. <0.2 mm
    3. --- Content provided by FirstRanker.com ---

    4. <0.2 μm
    5. <2 μm

    Correct Answer :- <0.2 µm

  32. If a marker bed cut by a fault does not show any displacement across the fault line, the most likely reason is:
    1. the marker bed is later than the fault
    2. --- Content provided by FirstRanker.com ---

    3. the fault is a reverse fault
    4. the fault is a trace-slip fault
    5. the fault slip is seismic in nature

    Correct Answer :- the fault is a trace-slip fault

  33. --- Content provided by FirstRanker.com ---

  34. To assess dislocation density in a deformed crystal, which of the following instruments is best suited?
    1. Electron Probe Micro-Analyzer (EPMA)
    2. Scanning Electron Microscope (SEM)
    3. X-ray Fluorescence (XRF)
    4. Transmission Electron Microscope (TEM)

    Correct Answer :- Transmission Electron Microscope (TEM)

    --- Content provided by FirstRanker.com ---

  35. For dating a Precambrian porcellanite bed the most suitable geochronological method is
    1. C-14 method
    2. Rb-Sr method
    3. Sm-Nd method
    4. U-Pb method
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- U-Pb method

  36. Marine carbonate cement precipitated during glacial period will show
    1. High δ18O-signature
    2. Low δ18O signature

    Correct Answer :- High δ18O-signature

    --- Content provided by FirstRanker.com ---

  37. Wavelengths of electron beam in SEM is typically
    1. Few picometers to few tens of picometers
    2. Few nanometers
    3. Few hundreds of nanometers
    4. Few tens of nanometers
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- Few picometers to few tens of picometers

  38. ZAF correction in EPΜΑ refers to
    1. Fluorescence, atomic number and absorption correction
    2. Atomic number, thickness and fluorescence correction
    3. Atomic number, absorption and frequency correction
    4. --- Content provided by FirstRanker.com ---

    5. None of these

    Correct Answer :- Fluorescence, atomic number and absorption correction

  39. Relationship between the incident angle and the diffraction angle in an X-ray diffraction instrument is
    1. Incident angle is twice the diffraction angle
    2. Both are equal
    3. --- Content provided by FirstRanker.com ---

    4. Incident angle is half of the diffraction angle
    5. Diffraction angle is half of incident angle

    Correct Answer :- Incident angle is half of the diffraction angle

  40. Halophytes are the plants that are indicative of
    1. Saline deposits
    2. --- Content provided by FirstRanker.com ---

    3. Fresh water deposits
    4. Hydrocarbons
    5. Non-metallic ores

    Correct Answer :- Saline deposits

  41. --- Content provided by FirstRanker.com ---

  42. Which of the following parameters is considered to determine the reflectance of a vegetation canopy?
    1. Chlorophyll content
    2. Azimuth angle
    3. Solar Zenith angle
    4. All of these

    Correct Answer :- All of these

    --- Content provided by FirstRanker.com ---

  43. In the internal part of an orogen, rocks
    1. along the margins of the orogen, where rocks undergo thrusting above a detachment
    2. in the internal part where rocks have been squeezed up from great depth
    3. in the grabens
    4. in the horsts
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- along the margins of the orogen, where rocks undergo thrusting above a detachment

  44. In XRD studies, persistence of the 14.4 A° peak at 550°C of the K saturated clays confirms the presence of
    1. Illite
    2. Kaolinite
    3. Smectite
    4. --- Content provided by FirstRanker.com ---

    5. Chlorite

    Correct Answer :- Chlorite

  45. A rapid and progressive increase of the smectite in the in the clay mineral assemblage indicates
    1. Change of the source rock with dominance of Feldspar
    2. Change of the source rock with dominance of Mica
    3. --- Content provided by FirstRanker.com ---

    4. Change of the source rock with dominance of Quartz
    5. Change of the source rock with dominance of Carbonates

    Correct Answer :- Change of the source rock with dominance of Feldspar

  46. The Middle-Miocene Climatic Optima at about 15 Ma is marked by
    1. Warming
    2. --- Content provided by FirstRanker.com ---

    3. Cooling
    4. Extreme warming
    5. Extreme cooling

    Correct Answer :- Warming

  47. --- Content provided by FirstRanker.com ---

  48. The values of 50-60 for the chemical index of alteration (CIA) to assess weathering of silicate rock suggest
    1. Advanced stage of weathering
    2. Incipient stage of weathering
    3. Moderate stage of weathering
    4. Very strong weathering

    Correct Answer :- Incipient stage of weathering

    --- Content provided by FirstRanker.com ---

  49. Which of the following is true during deep burial?
    1. Possible addition and re-distribution of K
    2. Possible addition and re-distribution of Ti
    3. Possible addition and re-distribution of Al
    4. Possible addition and re-distribution of Na
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- Possible addition and re-distribution of K

  50. The meandering rivers are marked by
    1. Shallowest section at crossovers and the deepest section at bends
    2. Deepest section at crossovers and the shallowest section at bends
    3. Uniform depth at crossovers and at the bends
    4. --- Content provided by FirstRanker.com ---

    5. Deep sections both at crossovers and the bends

    Correct Answer :- Shallowest section at crossovers and the deepest section at bends

  51. Facies analysis of the gravel dominated braided rivers shows
    1. St as the main facies
    2. Gm as the main facies
    3. --- Content provided by FirstRanker.com ---

  52. The meandering rivers are characterized by
    1. Sinuosity >1.3 and bed load <11%
    2. Sinuosity <1.3 and bed load >11%
    3. Sinuosity >1.3 and bed load >11%
    4. Sinuosity <1.3 and bed load <11%
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- Sinuosity >1.3 and bed load <11%

  53. In braided rivers, the width/depth ratio is and the bed load is
    1. Width/Depth ratio <40 and bead load <11%
    2. Width/Depth ration >40 and bead load >11%
    3. Width/Depth ratio <40 and bead load >11%
    4. --- Content provided by FirstRanker.com ---

    5. Width/Depth ratio > 40 and bead load <11%

    Correct Answer :- Width/Depth ration >40 and bead load >11%

  54. The longitudinal/medial bars in braided rivers occur as
    1. Bar deposits elongated transvers to the flow direction
    2. Bar deposits elongated parallel to the flow directions
    3. --- Content provided by FirstRanker.com ---

    4. Bar deposits along the convex side of the of the banks
    5. Bar deposits along the concave side of the banks

    Correct Answer :- Bar deposits elongated parallel to the flow directions

  55. Which of the following geophysical method is most suitable for groundwater exploration?
    1. Resistivity
    2. --- Content provided by FirstRanker.com ---

    3. Magnetic
    4. Sonic
    5. Gravity

    Correct Answer :- Resistivity

  56. --- Content provided by FirstRanker.com ---

  57. Theim's equation for steady state radial flow to a tubewell in confined aquifer can be used to estimate:
    1. Transmissivity only
    2. Specific yield only
    3. Both Transmissivity and Storativity

    Correct Answer :- Transmissivity only

  58. --- Content provided by FirstRanker.com ---

  59. The major ions considered for hydrochemical facies analysis using trilinear plot are
    1. Sodium, Potassium, Phosphorus, Magnesium, Chloride, Sulphate, Carbonate and Nitrate
    2. Sodium, Potassium, Calcium, Magnesium, Chloride, Sulphate, Carbonate and Bicarbonate
    3. Arsenic, Potassium, Calcium, Lead, Fluoride, Sulphate, Carbonate and Bicarbonate
    4. Zinc, Mercury, Calcium, Magnesium, Aluminium, Sulphate, Carbonate and Bicarbonate

    Correct Answer :- Sodium, Potassium, Calcium, Magnesium, Chloride, Sulphate, Carbonate and Bicarbonate

    --- Content provided by FirstRanker.com ---

  60. Rainwater harvesting and artificial recharge to groundwater is generally done in
    1. Shallow groundwater level areas
    2. In wetlands
    3. In areas with deeper water levels, where water table is declining heavily
    4. In areas along and close to water bodies
    5. --- Content provided by FirstRanker.com ---

    Correct Answer :- In areas with deeper water levels, where water table is declining heavily

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This download link is referred from the post: DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA