Calculation of true thickness of the bed

CSIR-NET 2018 JUNE TEST

TEST-3

  

time limit is 5 minutes

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1. Intraplate earthquakes predominantly occur in the depth range
   1.   100-300 km
   2.   300-700 km
   3.   40-100 km
   4.   0-40 km
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. Earth's referecne spheriod
   1.   is below the geoid in the oceanic region
   2.   coincides with the geoid in the land region
   3.   is above the geoid in the oceanic region
   4.   coincides with the geoid in the oceanic region
4. The first consequence of earliest differentiation of the Earth is the formation of the........
   1.   Oxygen rich atmosphere
   2.   Ocenas
   3.   Core
   4.   Continental crust
5. 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.   Rb-Sr dating
   3.   Radiocarbon dating
   4.   K-Ar dating
6. 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.   The same
   2.   Eight times
   3.   Twice
   4.   Four times
7. Which of the following processes is not related to plate tectonics?
   1.   Mountain Building
   2.   Subduction
   3.   Rise of mantle plume
   4.   Sea floor spreading
8. Which one of the mineral sequences, arranged in the order of increaing hardness (in Mohs scale) is correct?
   1.   Calcite, apatite, orthoclase, quartz
   2.   Talc, calcite, gypsum, apatite
   3.   Orthoclase, topaz, quartz, diamond
   4.   Gypsum, talc, calcite, apatite
9. What is the third most abundant element (after H and He) in the solar system?
   1.   Fe
   2.   Ni
   3.   Si
   4.   O
10. On the Earth's surface, the Earth's normal magnetic field
    1.   decreases both with elevation and depth
    2.   increases with elevation, but decreases with depth
    3.   increases both with elevation and depth
    4.   decreases with elevation, but increases with depth