soil science MCQs – Page 6

Practise focused soil science questions with marked answers for exam preparation and subject revision.

soil science Mcqs
101. Which of the following is wrong?
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A. Soil texture influences behavior of soil.

B. The arrangement of soil aggregates is called soil structure.

C. The relative percentage of sand, silt, clay is soil texture.

D. Sandy soils have higher sand percentage with more water holding capacity
102. The credit for identifying the essentality of K, Ca, Mg and P to planta goes to________?
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A. Dr. Muhammad Sharif et al.

B. C. Sprengel

C. Theodore Saussure

D. Shafiq Khalil et al.

103. Examples of prismatic structures are found in the _______________ mapped in KPK and the northern part of Punjab.
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A. All of the above

B. Peshawar series

C. wazirabad & pindorian series

D. Gujranwala series

104. Which is/are dominating salt/s in alkali soil:
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A. NaHCO<sub>3</sub>

B. Na<sub>2</sub>CO<sub>3</sub>

C. MgSO<sub>4</sub>

D. th a & b
105. Which mulch reduce soil temperature?
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A. Polythene

B. White polythene

C. Black polythene

D. Both B&C

106. Sustainable technologies to improve soil fertility and physical condition:
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A. Regular use of FYM, Composts, acidic mulches, Green manures and Organic fertilizers to increase OM content of Soil.

B. All of the above

C. Balance use of NPK fertilizers according to the need of crops.

D. Following proper crop rotation (shallow rooted and deep root crops) in the cropping session.

107. Soil order characterized by excess of weathering with dominant iron and aluminium oxide clays, common in tropics is_________?
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A. Entisols

B. Oxisols

C. Alfisols

D. Mollisols

108. Some times, AB/EB/BA/BE horizons in soil profile are present which are called__________?
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A. Master horizons

B. Transition horizons

C. All of the above

D. Little horizons

109. Rate of entry of water in soil is__________?
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A. Leaching

B. Infiltration

C. Seepage

D. Percolation

110. Silica tetrahedron is__________?
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A. Six sided arrangement

B. Eight sided arrangement

C. Four sided arrangement

D. both A & B

111. Soil is a mixture of__________?
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A. Air

B. Water

C. All of the above

D. Minerals And organic matter

112. Which nutrients are immobile in plants?
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A. Ca

B. P

C. B

D. Both A & C
113. The diagnostic techniques used in evaluating soil nutrient status and determining fertilizer requirements of the crop include:
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A. Plant analysis

B. All of the above

C. Greenhouse pot experimentation & soil testing

D. Nutrient deficiency symptoms & field experimentation

114. Tunnel erosion is the form of:__________?
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A. Gully Erosion

B. Rainsplash erosion

C. Rill erosion

D. Sheet erosion

115. Organisms satisfying their carbon requirement as Co2 from atmosphere and energy requirement from oxidation of simple inorganic compound are called as_________?
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A. Chemoautotroph

B. None of these

C. Saprophyte

D. Photoautotroph

116. If a manure pile is exposed to the rain, what nutrient will be lost the most ?
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A. N

B. Ca

C. S

D. Mg

117. The kind, rate and intensity and pedogenic processes are controlled by ________ ,soil-forming factors?
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A. 7

B. 4

C. None of the above

D. 6

118. Soil particles as individuals such as sand and do not form aggregates. These are usually found in parent material or C horizon is:_________?
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A. All of the above

B. Single-grained

C. Massive

D. Aggregated

119. Father of soil conservation and Father of Pedology respectively?
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A. Winogradsky & R. Morphy

B. Winogradsky & Dokuchaev

C. Bennett & Dokuchaev

D. both A & B

120. The available soil is being polluted quickly by _____________ wastes.
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A. Agricultural

B. Industrial

C. Household

D. All of the above