GATE-2018 (24) :Wyllie – Time average equation

CSIR-NET 2018 JUNE TEST

TEST-3

  

time limit is 5 minutes

 

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