The sulphate rocks are formed in ocean by leaching of:

Related Mcqs:

1. Soil formed-after leaching and rich in Al and Fe is

   A. Alluvial
   B. Padsol
   C. Laterite
   D. None of these

2. The percentage of water bound in lithosphere and sedimentary rocks is:

   A. 75
   B. 65
   C. 85
   D. 95

3. Plants growing on rocks are called on:

   A. Psychrophytes
   B. Lithophytes
   C. Halophytes
   D. Sciophytes

4. The efficiency of primary production in an ocean is:

   A. 5%
   B. 3.50%
   C. 1%
   D. 0.20%

5. The percentage of run off water reaching the ocean and evaporation into atmosphere is respectively:

   A. 27 & 73
   B. 73 & 27
   C. 37 & 63
   D. 63 & 37

6. The Atacama desert of Coastal South America running from southern Ecuador to central ______, between the Andes mountains and the Pacific Ocean:

   A. United State
   B. Chile
   C. Both (a) & (b)
   D. None of these

7. Trophic levels are formed by:

   A. Only plants
   B. Only animals
   C. Only carnivores
   D. Organisms linked in food chains

8. Trophic levels are formed by:

   A. Only plants
   B. Only animals
   C. Only carnivores
   D. Organisms linked in food chains

9. In which type of the forest, humus is formed by the dry and dead leaves:

   A. Coniferous forest
   B. Alpine
   C. Tundra forest
   D. Deciduous forest

10. The following radioactive isotopes are formed by nuclear fission:

    A. Sr90, I131
    B. Cr51, Cu64
    C. Zr95, Mn54
    D. All of these