Calculation of true thickness of the bed

CSIR-NET 2016 DECEMBER

TEST-4

  

time limit is 8 minutes

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1. Which one of the given gases in the atmosphere is the most important for chemical weathering on the surface of the Earth?
   1.   Water vapour
   2.   SO2
   3.   NO2
   4.   CO2
2. Mid-oceanic ridges, areas of crustal extension, are usually associated with
   1.   normal and strike-slip faults
   2.   normal and transform faults
   3.   normal and reverse faults
   4.   reverse and strike-slip faults
3. A newly discovered planet has an atmosphere made of a gas whose specific heat cP is 1000 J Kg-1 K-1 .If the lapse rate is 20 K/km , what is its acceleration due to gravity?
   1.   20 m/s2
   2.   5 m/s2
   3.   25 m/s2
   4.   10 m/s2
4. Mid-latitude deserts are located
   1.   in interior of continents
   2.   in glaciated regions
   3.   on the western sides of continents
   4.   on the eastern sides of continents
5. Self potential (SP) logs from two shaly sandstone reservoirs A and B record their pseudo-static self potential (PSP) and static self potential (SSP). The ratio of PSP to SSP in A and B are 0.4 and 0.7, respectively. For both A and B, the mud filtrate resistivity is more than the formation water resistivity (Rmf > Rw). This implies that the shale volume of A is
   1.   one-fourth of that in B
   2.   twice that in B
   3.   four times of that in B
   4.   half of that in B
6. The present day Martian(Mars) surface is not known to contain water either in liquid or solid form, however, ice has been reported from the polar regions of the planet. This ice is likely to be frozen
   1.   Sulphur dioxide
   2.   Oxygen
   3.   Carbon dioxide
   4.   Hydrogen
7. The correct order of decreasing stability of minerals during chemical weathering is
   
   1.   feldspar, olivine, amphibole, pyroxene
   2.   quartz, pyroxene, olivine, feldspar
   3.   quartz, pyroxene, feldspar, olivine
   4.   quartz, feldspar, pyroxene, olivine
8. Shear strain is measured by changes in
   
   1.   viscosity
   2.   length
   3.   volume
   4.   angle
9. A potential difference of 10 mV is measured in an electrical survey with Wenner configuration using an electrode spacing of 10 m and 1.0 amp current. What would be the potential difference if the measurements are made with a Schlumberger configuration employing current electrode spacing of AB =30 m, potential electrode spacing of MN = 4 m and the same current?
   1.   36.2 mV
   2.   2.76 mV
   3.   3.62 mV
   4.   27.6 mV
10. The total observed runoff volume during a storm of 5-hr duration with a uniform intensity of 16 mm/hr is 20 *10^6 m3 . If the area of the basin is 400 km^2 , then the infiltration (mm) is
    
    1.   20
    2.   30
    3.   15
    4.   25