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MCQs

Total Questions : 140 | Page 8 of 14 pages
Question 71. Which zone is the most important from an irrigation point of view?
  1.    Soil Zone
  2.    Intermediate Zone
  3.    Capillary Zone
  4.    Saturation Zone
 Discuss Question
Answer: Option A. -> Soil Zone
Answer: (a).Soil Zone
Question 72. How many days are generally taken to obtain field capacity after free gravity drainage?
  1.    3 to 7 days
  2.    4 to 8 days
  3.    5 to 9 days
  4.    2 to 5 days
 Discuss Question
Answer: Option D. -> 2 to 5 days
Answer: (d).2 to 5 days
Question 73. What is the name of water which flows under gravity?
  1.    Hygroscopic Water
  2.    Gravity Water
  3.    Capillary Water
  4.    Residue Water
 Discuss Question
Answer: Option B. -> Gravity Water
Answer: (b).Gravity Water
Question 74. Field capacity is different from gravity water.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 75. By what type of forces the soil grains retain water on their surfaces?
  1.    Capillary Forces
  2.    Cohesive Forces
  3.    Molecular Attraction and by Loose Chemical Bonds
  4.    Compressive Forces
 Discuss Question
Answer: Option C. -> Molecular Attraction and by Loose Chemical Bonds
Answer: (c).Molecular Attraction and by Loose Chemical Bonds
Question 76. Based on surface tension, what is the name of the part of field capacity water?
  1.    Hygroscopic Water
  2.    Gravity Water
  3.    Capillary Water
  4.    Residue Water
 Discuss Question
Answer: Option C. -> Capillary Water
Answer: (c).Capillary Water
Question 77. Based on loose chemical bonds, what is the name of the part of field capacity water?
  1.    Hygroscopic Water
  2.    Gravity Water
  3.    Capillary Water
  4.    Residue Water
 Discuss Question
Answer: Option A. -> Hygroscopic Water
Answer: (a).Hygroscopic Water
Question 78. Determine the field capacity, when the unit weight of water is 9.8 KN/m³, and volume of water stored in unit area of soil is 28 m³, the dry unit weight of soil is 18 KN/m³, and the depth of root zone of the plant is 7 m.
  1.    2.178 m²
  2.    2.135 m²
  3.    2.125 m²
  4.    2.25 m²
 Discuss Question
Answer: Option A. -> 2.178 m²
Answer: (a).2.178 m²
Question 79. Determine the volume of water stored in unit area if unit weight of water is 9.8 KN/m³, dry unit of soil is 17 KN/m³, field capacity (F) is 2.35 m², and depth of root zone of the plant is 9 m.
  1.    36.69 m³
  2.    36 m³
  3.    36.12 m³
  4.    36.25 m³
 Discuss Question
Answer: Option A. -> 36.69 m³
Answer: (a).36.69 m³
Question 80. Capillary water is available to plants and hygroscopic water is not.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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