MCQOPTIONS
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MCQOPTIONS
This section includes 86 Mcqs, each offering curated multiple-choice questions to sharpen your Graduate Aptitude Test (GATE) knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Herringbone structure is generally formed in which of the following environments? |
| A. | Fluvial |
| B. | Aeolian |
| C. | Lacustrine |
| D. | Tidal |
| Answer» E. | |
| 52. |
A potassic ultrabasic hybrid igneous rock containing macrocrysts of olivine, Cr-rich diopside, phlogopite and pyrope in a groundmass of serpentine, carbonate and perovskite can be named as |
| A. | kimberlite |
| B. | ijolite |
| C. | melilitolite |
| D. | harzburgite |
| Answer» B. ijolite | |
| 53. |
Vertical exaggeration commonly occurs during stereo-viewing of aerial photographs. Where does it occur? |
| A. | In the photographs |
| B. | In the terrain |
| C. | In the stereoscope |
| D. | In the perceptor’s mind |
| Answer» E. | |
| 54. |
A major thrust in the Himalayas has resulted in intense shearing of a zone about 0.5 km wide on either side of the thrust leading to landslides. Which GIS function can be used to display the shear zone? |
| A. | Contiguity (adjacency) |
| B. | Spread |
| C. | Proximity (buffer) |
| D. | Search |
| Answer» D. Search | |
| 55. |
Which one of the following basins is producing petroleum from the coal-rich reservoir rocks? |
| A. | Rajasthan Basin |
| B. | Cambay Basin |
| C. | Cauvery Basin |
| D. | Krishna–Godavari Basin |
| Answer» C. Cauvery Basin | |
| 56. |
The correct sequence of metamorphic facies with increasing depth in a subduction zone is |
| A. | greenschist, blueschist, eclogite |
| B. | greenschist, eclogite, blueschist |
| C. | blueschist, greenschist, eclogite |
| D. | blueschist, eclogite, greenschist |
| Answer» B. greenschist, eclogite, blueschist | |
| 57. |
Determine the correctness or otherwise of the following Assertion [a] and Reason [r]. Assertion: Biaxial minerals can be pleochroic in three shades. Reason: Biaxial minerals have three refractive indices. |
| A. | Both [a] and [r] are true and [r] is the correct reason for [a] |
| B. | [a] is true but [r] is false |
| C. | [a] is false but [r] is true |
| D. | Both [a] and [r] are true but [r] is not the correct reason for [a] |
| Answer» B. [a] is true but [r] is false | |
| 58. |
In which of the following crystal systems, the characteristic symmetry elements “a two-fold axis of rotation and at least two planes of symmetry” are possible? |
| A. | Tetragonal |
| B. | Hexagonal |
| C. | Orthorhombic |
| D. | Monoclinic |
| Answer» D. Monoclinic | |
| 59. |
Ca-montmorillonite is formed by the chemical weathering of |
| A. | calcite |
| B. | augite |
| C. | orthoclase |
| D. | forsterite |
| Answer» C. orthoclase | |
| 60. |
Calculate the degree(s) of freedom of the assemblage orthopyroxene + clinopyroxene + plagioclase + hornblende + quartz + fluid in the chemical system CaO–FeO–MgO–Al2O3–SiO2–H2O with pressure and temperature as physical variables. |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 61. |
An analysis of augite yields 3 silicon atoms calculated on the basis of 12 oxygen atoms. If only Al replaces Si, calculate the number of tetrahedral-Al in the mineral. |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 62. |
Calculate the concentration (in ppm) of Ni in olivine that crystallizes from a basaltic magma containing 20 ppm Ni. The partition coefficient (solid/melt) of nickel is 5. |
| A. | 4 |
| B. | 20 |
| C. | 100 |
| D. | 500 |
| Answer» D. 500 | |
| 63. |
A sandstone bed dipping 30° has an outcrop width of 20 m in a flat terrain. What is the true thickness (in m) of the bed? |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 30 |
| Answer» C. 20 | |
| 64. |
Specific discharge of 1 cm per day is observed in a porous medium where hydraulic head difference is 0.5 m and flow length is 20 m. Calculate the hydraulic conductivity (in m/day). |
| A. | 0.4 |
| B. | 0.8 |
| C. | 1.2 |
| D. | 1.6 |
| Answer» B. 0.8 | |
| 65. |
In which of the following localities does coal deposit occur? |
| A. | Dariba |
| B. | Kudremukh |
| C. | Wardha |
| D. | Rudrasagar |
| Answer» D. Rudrasagar | |
| 66. |
When did the supercontinent Pangaea begin to break up? |
| A. | Cenozoic |
| B. | Mesozoic |
| C. | Palaeozoic |
| D. | Proterozoic |
| Answer» C. Palaeozoic | |
| 67. |
Which one of the following mineral constituents exhibits strong absorption in the UV-blue band of the EM spectrum due to charge transfer effect leading to colouration? |
| A. | Fe-O |
| B. | Si-O |
| C. | Al-OH |
| D. | Mg-OH |
| Answer» B. Si-O | |
| 68. |
The Jurassic stratigraphic succession of Kutch is characterized by which one of the following? |
| A. | Cephalopods |
| B. | Trilobites |
| C. | Brachiopods |
| D. | Graptolites |
| Answer» B. Trilobites | |
| 69. |
Which one of these is NOT a source of sufficient water supply but can transmit certain quantity of water on a regional scale due to leakage? |
| A. | Aquifer |
| B. | Aquitard |
| C. | Aquiclude |
| D. | Aquifuge |
| Answer» C. Aquiclude | |
| 70. |
Which of the following is NOT a variety of silica (SiO2)? |
| A. | Jasper |
| B. | Coesite |
| C. | Stishovite |
| D. | Flinkite |
| Answer» E. | |
| 71. |
Choose the correct pair of plutonic rock and its volcanic equivalent. |
| A. | Gabbro–Trachyte |
| B. | Syenite–Andesite |
| C. | Granite–Rhyolite |
| D. | Granodiorite–Basalt |
| Answer» D. Granodiorite–Basalt | |
| 72. |
Out of the following gases which one has the highest contribution towards the greenhouse effect on the Earth? |
| A. | CO2 |
| B. | CO |
| C. | CH4 |
| D. | H2O |
| Answer» E. | |
| 73. |
Which physical property of the medium governs the response of Ground Penetrating Radar (GPR)? |
| A. | Electrical conductivity |
| B. | Electromagnetic conductivity |
| C. | Seismic wave velocity |
| D. | Electrical permeability (dielectric permittivity) |
| Answer» E. | |
| 74. |
The most sensitive instrument for magnetic survey is |
| A. | magnetic field balance |
| B. | fluxgate magnetometer |
| C. | proton precession magnetometer |
| D. | optically pumped magnetometer |
| Answer» E. | |
| 75. |
Which one of the following can be best explored using electromagnetic method? |
| A. | Oil-bearing strata |
| B. | Coal-bearing strata |
| C. | Disseminated sulphide deposit |
| D. | Massive sulphide deposit |
| Answer» E. | |
| 76. |
During its orbital motion around the Sun, the Earth is nearest to the Sun on |
| A. | March 21 |
| B. | July 4 |
| C. | September 23 |
| D. | January 3 |
| Answer» E. | |
| 77. |
Which one of the following can be estimated from SP log against a saline-water saturated sandstone formation encountered in a well? |
| A. | Resistivity of formation water |
| B. | Degree of water saturation |
| C. | Depth of invasion |
| D. | Permeability |
| Answer» B. Degree of water saturation | |
| 78. |
Bouguer correction is applied to correct for the gravity anomaly due to mass between station location and |
| A. | mean sea level |
| B. | local datum plane |
| C. | base of upper crust |
| D. | Mohorovicic discontinuity |
| Answer» C. base of upper crust | |
| 79. |
On a photo-scale of 1:40000, a square shaped open cast coal mine of 1 km2 area would have an area of (in cm2) |
| A. | 2.50 |
| B. | 4.00 |
| C. | 6.25 |
| D. | 12.00 |
| Answer» D. 12.00 | |
| 80. |
If the rake of net slip of an inclined fault is 90°, the fault is |
| A. | strike-slip fault |
| B. | dip-slip fault |
| C. | oblique-slip fault |
| D. | transcurrent fault |
| Answer» C. oblique-slip fault | |
| 81. |
Polymetallic nodules on the ocean floor contain significant amounts of: |
| A. | Cu–Ni–Co |
| B. | Pb–Zn–Ti |
| C. | Hg–Mo–Pt |
| D. | U–Th–Nb |
| Answer» B. Pb–Zn–Ti | |
| 82. |
Point bar deposit is associated with |
| A. | braided river |
| B. | estuary |
| C. | meandering river |
| D. | beach |
| Answer» D. beach | |
| 83. |
Eparchean unconformity separates geological units of |
| A. | early Archaean from late Archaean |
| B. | Archaean from Proterozoic |
| C. | Proterozoic from Palaeozoic |
| D. | Archaean from Phanerozoic |
| Answer» C. Proterozoic from Palaeozoic | |
| 84. |
Which one amongst the following rocks commonly has highest unconfined compressive strength? |
| A. | Coarse-grained sandstone |
| B. | . Mica schist |
| C. | Fossiliferous limestone |
| D. | Massive basalt |
| Answer» E. | |
| 85. |
Which one of the following river systems forms the largest fluvio-deltaic system in the world? |
| A. | Mississippi–Ohio |
| B. | Red–Mekong |
| C. | Ganga–Brahmaputra |
| D. | Yellow–Ba Hoi |
| Answer» D. Yellow–Ba Hoi | |
| 86. |
In Mohs’ scale of hardness, how many minerals are of silicate composition? |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» B. 5 | |