Calculation of true thickness of the bed

CSIR-NET 2018 JUNE TEST

TEST-3

  

time limit is 5 minutes

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