NTA NET Geology Geophysics GATE 2012 Higher Questions and Answers Part 1

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Q.1 In Mohs’ scale of hardness, how many minerals are of silicate composition?

(A) 4

(B) 5

(C) 6

(D) 7

Q.2 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

Q.3 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

Q.4 Eparchean unconformity separates geological units of

(A) Early Archaean from late Archaean

(B) Archaean from Proterozoic

(C) Proterozoic from Palaeozoic

(D) Archaean from Phanerozoic

Q.5 Point bar deposit is associated with

(A) Braided river

(B) Estuary

(C) Meandering river

(D) Beach

Q.6 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

Q.7 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) trans current fault

Q.8 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

Q.9 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

Q.10 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

Q.11 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

Q.12 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

Q.13 Name the planet in the solar system which has its “day” longer than its “year”.

(A) Mercury

(B) Venus

(C) Mars

(D) Neptune

Q.14 The most sensitive instrument for magnetic survey is

(A) magnetic field balance

(B) fluxgate magnetometer

(C) proton precession magnetometer

(D) optically pumped magnetometer

Q.15 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)

Q.16 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

Q.17 Depth range of the ‘transition zone’ associated with phase changes in the Earth’s mantle is (in km)

(A) 35 to 150

(B) 150 to 410

(C) 410 to 660

(D) 660 to 800

Q.18 Choose the correct pair of plutonic rock and its volcanic equivalent.

(A) Gabbro–Trachyte

(B) Syenite–Andesite

(C) Granite–Rhyolite

(D) Granodiorite–Basalt

Q.19 Which of the following is NOT a variety of silica (SiO2)?

(A) Jasper

(B) Coesite

(C) Stishovite

(D) Flinkite

Q.20 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

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