Gate Geology and Geophysics 2014

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Questions of this subject!.

QuestionLikes!Dislikes!Answers!
1)Choose the most appropriate word from the options given below to complete the following sentence. - Gate Geology and Geophysics 2014

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2)Choose the most appropriate word from the options given below to complete the following sentence. - Gate Geology and Geophysics 2014 (General Aptitude section)

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3)Which of the following options is the closest in meaning to the sentence below? “As a woman, I have no country.” - Geology and Geophysics 2014

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4)Which one of the following planets has the highest bulk density? - Geology and Geophysics 2014

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5)Mid-Oceanic ridges mark _______ plate margins and can be traced by belts of _______focus earthquakes. Gate geology and geophysics

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6)From the surface to the Earth’s interior, the velocity of P-wave decreases and the material density increases at the boundary between: (-Gate geology and geophysics 2014)

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7)The following gamma ray (GR) log data are recorded in a borehole: GR log value against a formation = 30 API units, Maximum GR log value = 45 API units, Minimum GR log value = 20 API units. (-Gate geology and geophysics 2014)

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8)Cirques are formed by: (-Gate geology and geophysics 2014)

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9)During which of the following geological eras did birds and mammals first appear on the Earth? (-Gate geology and geophysics 2014)

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10)Select the copper ore minerals from the following: (P) Chalcopyrite (Q) Pyrite (R) Pyrrhotite (S) Bornite (T) Sphalerite (U) Chalcocite (-Gate geology and geophysics 2014)

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11)The reflection coefficient at the interface between two layers of resistivities 9 Ωm and 1 Ωm respectively is: (-Gate Geology and Geophysics 2014)

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12)In electromagnetic (EM) sounding, the depth of investigation ___________ with increasing frequency. (-Gate Geology and Geophysics 2014)

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13)The International Gravity Formula predicts the theoretical gravity value at a given point assuming a: (-Gate Geology and Geophysics)

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14)The diurnal variation of geomagnetic elements is due to a system of electric currents flowing in the: (-Gate Geology and Geophysics 2014)

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15)The diurnal variation of geomagnetic elements is due to a system of electric currents flowing in the: (-Gate Geology and Geophysics 2014)

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16)Match the mineral deposits (listed in Group 1) with the most appropriate geophysical exploration methods (listed in Group 2): (-Gate Geology and Geophysics 2014)

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17)In seismic refraction surveys, the critical distance: (-Gate geology and geophysics 2014)

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18)As compared to large earthquakes, small earthquakes are: (-Gate geology and geophysics 2014)

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19)For earthquakes of magnitudes 6 and 7, the seismic wave amplitudes are A6 and A7 and the radiated energies are E6 and E7 respectively. Which one of the following is true? (-Gate geology and geophysics)

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20)Structure contours of a bedding plane at 100 m interval are spaced in such a manner that the horizontal equivalent is also 100m. The dip of the bedding plane is: (-Gate geology and geophysics)

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21)Horizontal slickensides are observed on the surface of a vertical fault. What is the type of fault? (-Gate geology and geophysics)

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22)The correct chronological order (older to younger) of the following volcanic events is: (-Gate geology and geophysics)

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23)A clastic rock dominantly composed of feldspar grains is: (-Gate geology and geophysics)

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24)A metamorphic rock consists of pyroxene, plagioclase and quartz, and exhibits hornfelsic texture. The rock has undergone _____________ metamorphism. (-Gate geology and geophysics 2014)

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25)An igneous body with a flat top and a concave-upward base is known as: (-Gate geology and geophysics 2014)

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26)The velocity discontinuity between the upper crust and the lower crust is known as ______________ discontinuity. (-Gate geology and geophysics)

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27)Which one of the following represents a closed crystallographic form? (-Gate Geology and Geophysics 2014)

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28)In a metamorphic terrain, crenulations at the hinge zone of a fold along with the development of axial plane foliation is an evidence of: (-Gate geology and geophysics)

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29)A phase-diagram with a specified bulk-composition is known as: (-Gate geology and geophysics 2014)

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30)The uniaxial interference figure of a mineral given below shows the changes in the position of color bands when a mica plate is inserted in the accessory slot of the microscope as shown. The changes in the interference figure are due to: (-Gate geolo

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31)The relative enrichment factors (∆ values) of sulphur isotopes of two sulphide minerals A and B in equilibrium with H2S at the same P-T-X conditions are +5.9 ‰ and −11.2 ‰ respectively. If A and B are in equilibrium under the same P-T-X condi

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32)In an ore mine exposing stratified sulfide ore with sulfide bands having thickness between 10 and 100 cm, which one of the following sampling methods is the most appropriate? (-Gate geology and geophysics)

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33)Metal content (in metric tonnes) of an ore having specific gravity and assay values of 2.86 and 1.49 % respectively in a mining block 40 m long, 30 m wide and with an average thickness of 2.13 m is _______. (-Gate geology and geophysics 2014)

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34)From the given Eh-pH diagram, which one of the following pairs can be inferred to be a disequilibrium assemblage? (-Gate geology and geophysics 2014)

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35)From the list of planktic foraminifera below, the pair having a supplementary sutural aperture is: (-Gate geology and geophysics 2014)

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36)Which one of the following marine environments is indicated by the assemblage of benthic foraminifera Quinqueloculina, Lenticulina, Ammonia, Elphidium? (-Gate geology and geophysics 2014)

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37)The correct chronological order (older to younger) of the following geological units is: (-Gate geology and geophysics)

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38)Knick points indicate changes in the: (-Gate geology and geophysics 2014)

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39)A confined sandy aquifer has a thickness of 10 m and transmissivity of 0.75 m2 per day. Its hydraulic conductivity is _____ m/day. (-Gate geology and geophysics 2014)

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40)A geological reconnaissance survey is being carried out using remote sensing multispectral data. Which set of the two band data of the following is most appropriate for mapping limonite bearing zones? (-Gate geology and geophysics 2014)

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41)The maximum amount of hydrogen (dry mineral matter free basis) in bituminous-anthracite is: (-Gate geology and geophysics 2014)

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42)Drainage patterns observed in four areas are shown in black-and-white panchromatic images P, Q, R and S. Field work in these areas has indicated presence of the following lithology/geological unit. (-Gate geology and geophysics 2014)

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43)The given figure shows the grain size distribution of two soil samples S1 and S2. The uniformity coefficient is defined as d60/d10, where d60 and d10 represent particle sizes corresponding to 60 and 10 percent finer respectively. Determine the correc

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44)Four aqueous-vapor fluid inclusions P, Q, R and S are petrographically identical at room temperature, and contain approximately 90 % liquid and 10 % vapor. The freezing temperatures of the fluid inclusions are: P = − 5.3 °C, Q = − 16.6 °C, R =

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45)Which one of the following is the youngest marine formation in the Himalaya? (-Gate geology and geophysics 2014)

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46)Which one of the following environments is represented by molasse facies? - Gate geology and geophysics 2014

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47)In the given ternary (Fo = forsterite; Di = diopside; An = anorthite) eutectic diagram, the point A represents the composition of magma. What will be the sequence of crystallization during cooling of this magma? (-Gate geology and geophysics 2014)

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48)Which one of the following is the best suited mining method for a low-dipping, tabular-shaped, hard and compact ore body with 2 to 2.5 m thickness sandwiched between hard and compact roof and floor rock? (-Gate geology and geophysics 2014)

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49)A gaseous hydrocarbon-bearing zone can be best identified by a combined analysis of: (-Gate geology and geophysics 2014)

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50)In general, geophysical inverse problems dealing with real data obtained from field measurements are: (-Gate geology and geophysics 2014)

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51)In vector calculus, Stoke’s theorem relates: (-Gate geology and geophysics 2014)

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52)The radial dependence of the solution of the Laplace equation in cylindrical coordinates is expressed in terms of: (-Gate geology and geophysics 2014)

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53)For an electrostatic field, the Maxwell’s equations reduce to: (-Gate geology and geophysics 2014)

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54)Which one of the following functions is used as a source-term to obtain the Green’s function of a boundary value problem? (-Gate geology and geophysics 2014)

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55)The heat flow through a unit area of the Earth’s surface is given by the product of: (-Gate geology and geophysics 2014)

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56)The S-wave velocity of a medium having a Poisson’s ratio and a P-wave velocity of 0.5 and 3 km/s respectively is _______km/s. (-Gate geology and geophysics 2014)

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57)The PKiKP phase denotes the passage of a seismic wave in the Earth as: (-Gate geology and geophysics 2014)

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58)Königsberger ratio refers to: (-Gate geology and geophysics 2014)

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59)The Poisson’s relation linking the gravity and magnetic potentials assumes the same anomaly source with: (-Gate geology and geophysics 2014)

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60)Compute the coefficient of anisotropy from the following parameters estimated from a Vertical Electric Sounding (VES) survey. (-Gate geology and geophysics 2014)

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61)The convolution of two finite length sequences xn = [1, 0, -2] and yn = [1, -1] is: (-Gate geology and geophysics 2014)

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62)Arrange the following electrode configurations in the ascending order of their depth of investigation. (-Gate geology and geophysics 2014)

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63)Which one of the following transforms relates the real and imaginary components of harmonic electromagnetic (EM) field? (-Gate geology and geophysics 2014)

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64)Which one of the following geophysical methods is most suitable for exploration of possible hydrocarbon-bearing sediments underlying the Deccan Traps? (-Gate geology and geophysics 2014)

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65)A collection of traces having a common mid-point is called a CMP gather. The number of traces in an n-fold survey in a CMP gather is: (-Gate geology and geophysics 2014)

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66)In seismic prospecting, migration is the process of moving data elements from: (-Gate geology and geophysics 2014)

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67)An 80 Hz seismic signal is sampled at a rate of 100 samples/s. What will be its aliased period (in seconds) in the sampled signal? (-Gate geology and geophysics 2014)

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68)The Fourier transform and integral of the Dirac delta function respectively are: (-Gate geology and geophysics 2014)

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69)Assertion (a): An efficient marine seismic survey should use an implosive source. Reason (r): The performance of a marine seismic source is rated by high pulse-to-bubble ratio. (-Gate geology and geophysics 2014)

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70) A landform that results from free fall of rocks is called -gate Geology & Geophysics 2017

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71) Which one of the following logging methods is NOT used to determine porosity? -gate Geology & Geophysics 2017

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72)PcP and ScS phases are reflected from gate Geology & Geophysics 2017

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73)PcP and ScS phases are reflected from gate Geology & Geophysics 2017

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74)Identify the CORRECT sequence of the electromagnetic waves in their increasing frequency -gate Geology & Geophysics 2017

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75)Gardner’s formula relates the seismic P-wave velocity (VP) to -gate Geology & Geophysics 2017

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76) Which one of the following sedimentary basins is related to extension? -gate Geology & Geophysics 2017

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77)Match the names listed in Group I with its attributes listed in Group II. -gate Geology & Geophysics 2017

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78) The main source of error in computing the orientation of planar features from drill cores is -gate Geology & Geophysics 2017

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79)Amongst the different gases in the atmosphere, which one of the following pairs DOES NOT contribute to heating of the atmosphere? -gate Geology & Geophysics 2017

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80)The data of which one of the following active electromagnetic techniques can be used to correct static shift effect in magnetotelluric apparent resistivity data? -gate Geology & Geophysics 2017

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81)Which one of the following statements describing aspects of partial melting behavior of a binary eutectic system is NOT TRUE? -gate Geology & Geophysics 2017

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82) Find the CORRECT statement amongst the following. -gate Geology & Geophysics 2017

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83) Which one of the following is NOT a set of polymorphous minerals? -gate Geology & Geophysics 2017

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84)Chemical analysis reveals that basalts contain much more aluminum (Al2O3 ~ 15%) in comparison to peridotites (Al2O3 ~ 4%). This is because they contain -gate Geology & Geophysics 2017

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85)Chemical analysis reveals that basalts contain much more aluminum (Al2O3 ~ 15%) in comparison to peridotites (Al2O3 ~ 4%). This is because they contain -gate Geology & Geophysics 2017

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86)Chemical analysis reveals that basalts contain much more aluminum (Al2O3 ~ 15%) in comparison to peridotites (Al2O3 ~ 4%). This is because they contain -gate Geology & Geophysics 2017

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87)A sandstone bed whose attitude is 090°, 30° is exposed on a flat surface. The true thickness of the bed is 100 m. The width of the outcrop of the sandstone bed along a N-S traverse on the ground is ________ m. -gate Geology & Geophysics 2017

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88)Assertion (a): The 18O/16O ratio in natural systems can be used as a thermometer. Reason (r): The fractionation of 18O/16O depends on temperature. -gate Geology & Geophysics 2017

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89)If the total volume of water in the Earth’s atmosphere, estimated to be about 1.29 x 104 km3 , were to completely precipitate and uniformly cover the Earth’s surface, estimated to be 5.1 x 108 km2 -gate Geology & Geophysics 2017

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90)Match the point group (HM symbol) in Group I with its corresponding general form in Group II -gate Geology & Geophysics 2017

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91) Interlimb angle and shape of a fold is best studied in a -gate Geology & Geophysics 2017

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92)Euler Poles defined for plate motions on a spherical earth are -gate Geology & Geophysics 2017

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93)Which one of the following sedimentary structures CANNOT be identified in vertical sections? -gate Geology & Geophysics 2017

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94)Which one of the following sedimentary structures CANNOT be identified in vertical sections? -gate Geology & Geophysics 2017

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95)Which one of the following sedimentary structures CANNOT be identified in vertical sections? -gate Geology & Geophysics 2017

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96)Which one of the following sedimentary structures CANNOT be identified in vertical sections? -gate Geology & Geophysics 2017

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97)Which one of the following sedimentary structures CANNOT be identified in vertical sections? -gate Geology & Geophysics 2017

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98)Which one of the following sedimentary structures CANNOT be identified in vertical sections? -gate Geology & Geophysics 2017

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99)Which one of the following sedimentary structures CANNOT be identified in vertical sections? -gate Geology & Geophysics 2017

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100)Which one of the following sedimentary structures CANNOT be identified in vertical sections? -gate Geology & Geophysics 2017

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101)A predominantly siliciclastic Mesozoic stratigraphic unit in mainland Kutch containing Trigonia and abundant plant fossils including Ptillophyllum is -gate Geology & Geophysics 2017

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102)Match the texture in Group I with its corresponding description in Group II. -gate Geology & Geophysics 2017

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103) Choose the CORRECT statement regarding coal.-gate Geology & Geophysics 2017

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104) The reflectance spectrum of solar energy by the hydrous molecules in plant leaves is best represented in an optical spectrometer in the wavelength range of -gate Geology & Geophysics 2017

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105)Which type of VES curve is obtained for a three-layered earth model consisting of wet shale (top layer), poorly water saturated sandstone (middle layer) and impermeable granite (bottom layer)? -gate Geology & Geophysics 2017

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106) In the estimation of magnetotelluric transfer function, the time-independent conservation of current at conductivity discontinuities will result in -gate Geology & Geophysics 2017

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107)In any given signal, removal of all periods shorter than Nyquist period is achieved by -gate Geology & Geophysics 2017

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108) The frequency range (in Hz) that defines dead-band in magnetotelluric source signal is -gate Geology & Geophysics 2017

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109)The deviation in the geographical locations of the magnetic poles from the geomagnetic poles of the Earth’s magnetic field is due to the -gate Geology & Geophysics 2017

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110)After migration, an anticline observed on an unmigrated seismic section becomes -gate Geology & Geophysics 2017

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111)A clean, thick and hydrocarbon bearing sandstone bed can be identified through a combination of -gate Geology & Geophysics 2017

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112) Which one of the following statements is NOT CORRECT? -gate Geology & Geophysics 2017

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113) In frequency domain IP, which one of the following frequency ranges (in Hz) is used to measure apparent resistivity at DC and AC limits? -gate Geology & Geophysics 2017

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114)The Bouguer anomaly obtained after applying all necessary corrections is due to -gate Geology & Geophysics 2017

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115)Analysis of data from a 3-component broadband seismological station yields seismic velocities, Vp = 7.0 km/s and Vs = 3.87 km/s for the lower crust. The resulting Poisson’s ratio of the lower crustal rocks (rounded to two decimal places) is -gate Geology & Geophysics 2017

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116) The Königsberger ratio, Qn, related to magnetization of rocks is very low (Qn<<1) for -gate Geology & Geophysics 2017

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117)In seismic exploration the dynamite source is generally considered to be a wavelet of-gate Geology & Geophysics 2017

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118)The maximum velocity of the Indian Plate is observed in -gate Geology & Geophysics 2017

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119)Sediments derived exclusively from the Deccan basalt are deposited on a high-energy beach and are lithified under shallow burial conditions. The sedimentary rock formed would be a/an -gate Geology & Geophysics 2017

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