Calculation of true thickness of the bed

CSIR-NET 2018 JUNE TEST

TEST-3

  

time limit is 5 minutes

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1. Earth's referecne spheriod
   1.   coincides with the geoid in the oceanic region
   2.   is above the geoid in the oceanic region
   3.   is below the geoid in the oceanic region
   4.   coincides with the geoid in the land region
2. Density contrast is the maximum across the
   1.   upper crust and lower crust boundary
   2.   mantle-outer core boundary
   3.   Crust- mantle boundary
   4.   outer-core and inner-core boundary
3. The first consequence of earliest differentiation of the Earth is the formation of the........
   1.   Continental crust
   2.   Ocenas
   3.   Oxygen rich atmosphere
   4.   Core
4. Intraplate earthquakes predominantly occur in the depth range
   1.   0-40 km
   2.   100-300 km
   3.   40-100 km
   4.   300-700 km
5. What is the third most abundant element (after H and He) in the solar system?
   1.   Ni
   2.   Fe
   3.   Si
   4.   O
6. Which one of the mineral sequences, arranged in the order of increaing hardness (in Mohs scale) is correct?
   1.   Calcite, apatite, orthoclase, quartz
   2.   Orthoclase, topaz, quartz, diamond
   3.   Gypsum, talc, calcite, apatite
   4.   Talc, calcite, gypsum, apatite
7. On the Earth's surface, the Earth's normal magnetic field
   1.   increases with elevation, but decreases with depth
   2.   decreases both with elevation and depth
   3.   increases both with elevation and depth
   4.   decreases with elevation, but increases with depth
8. Which one of the following isotope dating methods is based on the parent isotope abundances and not on the daughter isotope abundances?
   
   1.   U-Pb dating
   2.   K-Ar dating
   3.   Radiocarbon dating
   4.   Rb-Sr dating
9. Two planets A and B orbit around their Sun, B being four times farther away than A from their Sun. Then the length of the year on B, compared to that A, would be
   1.   Four times
   2.   The same
   3.   Twice
   4.   Eight times
10. Which of the following processes is not related to plate tectonics?
    1.   Rise of mantle plume
    2.   Sea floor spreading
    3.   Subduction
    4.   Mountain Building