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  • Question
  • The maximum soil fertility occurs in the pH range of


  • Options
  • A. 5.0 to 6.2
  • B. 6.0 to 7.2
  • C. 7.0 to 8.2
  • D. 4.0 to 5.2

  • Correct Answer
  • 6.0 to 7.2 


  • World Geography problems


    Search Results


    • 1. The most important factor that is affecting all the chemical weathering processes is

    • Options
    • A. vegetation
    • B. topography
    • C. climate
    • D. None of the above
    • Discuss
    • 2. The mountains which come into being after the continental drift started, with the break up of the large land mass of pangola are

    • Options
    • A. young mountains
    • B. old mountains
    • C. volcanic mountains
    • D. fold mountains
    • Discuss
    • 3. The most notable example of a tectonic valley is that of the

    • Options
    • A. Doon valley
    • B. Kashmir valley
    • C. plains of Aksai Chin
    • D. None of the above
    • Discuss
    • 4. The main properties of cosmic ray particles are

    • Options
    • A. its electric charge
    • B. its rest mass
    • C. its energy
    • D. All of these are its properties
    • Discuss
    • 5. The longest day (shortest night) in the southern hemisphere is

    • Options
    • A. June 21
    • B. December 22
    • C. July 21
    • D. November 22
    • Discuss
    • 6. The main types of air mass include

      1. maritime tropical(mT)
      2. maritime polar(mP)
      3. maritime arctic(mA)
      4. continental polar(cP)

    • Options
    • A. All of the above
    • B. I, III, IV
    • C. I, IV
    • D. I, II
    • Discuss
    • 7. The most densely populated country of Africa is

    • Options
    • A. Mauritius
    • B. Rwanda
    • C. Burundi
    • D. Sierra Leone
    • Discuss
    • 8. The moon

    • Options
    • A. is the natural satellite of earth
    • B. has no liquid water
    • C. has no atmosphere
    • D. All of the above
    • Discuss
    • 9. The minerals resources of north-eastern zone include

    • Options
    • A. coal, Fe, Mn, Cu, Mica, U, diamond
    • B. crude Petroleum and natural gas
    • C. Fe, Au(gold)
    • D. natural gas, Fe, Au, Mn, U
    • Discuss
    • 10. The luminous coloured ring, surrounding the sun is called the

    • Options
    • A. nebula
    • B. comet
    • C. asteroid
    • D. corona
    • Discuss


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