agriculture MCQs – Page 152

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

agriculture Mcqs

1. soil science 2. agronomy 3. entomology 4. water management 5. horticulture 6. agricultural economics 7. plant pathology 8. food technology 9. animal husbandry 10. plant breeding and genetics

3021. One ha cm of water is equal to__________?
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A. 100 tonnes of water

B. 100000 litres of water

C. Both A & B

D. 10 tonnes of water

3022. Being a soil scientist, do you know which is the popular book of soil science of Nyle.C.brady, 14th edition available in markets:
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A. Essenttials of soil sciences

B. Fundamentals of soil

C. The mechanics of soil

D. The nature and properties of soil

3023. Oxygen and Silicon together comprise approximately ______ %of the earth crust?
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A. 79%

B. 64%

C. 73%

D. 75 %

3024. Volcanic soils:
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A. Endsols

B. Aridisols

C. Gelisols

D. None of the above

3025. A and B horizon is called as_________?
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A. Solam

B. Inner core

C. None of the above

D. Regolith

3026. Basalt is a __________ rock:
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A. fine-grained

B. Dark coloured

C. both A & B

D. None of the above

3027. following are types of weathering:
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A. Geo chemical weathering

B. Judo weathering

C. Pedo chemical weathering

D. both a and c

3028. A horizon of the soil is also designated:
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A. Eluvistal horizon

B. Illuviated horizon

C. Alluvial horizon

D. None of the above.

3029. What is the concentration of pure water?
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A. 55.5 mol/L

B. 45.5 mol/L

C. Both a and b

D. none of these

3030. What is the effect of application of P2O5 fertilizer to a green manure leguminous crop in the availability of phosphorus to the succeeding crop?
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A. It fixes the P2O5 through humus and reduces the availability..

B. Green manure increases the availability in organic from to the next crop

C. Greater amount of phosphorus is taken up and converted into organic form, which is released on decomposition of green matter

D. It does not affect the availability of phosphorous to succeeding crop

3031. Which of the following are secondary minerals:
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A. Clay minerals

B. All of the above

C. Iron and aluminiumoxides

D. Amorphous silicates

3032. The following types of check dams have been tried in Pakistan:
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A. Cement & stone check dams

B. Brushwood check dams

C. All of the above

D. Loose stone or wire-bound check dams

3033. A set of soils with same parent material, topography, climate and biota but different age is called_________?
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A. Topography

B. Topo sequence

C. Catena

D. Chrono sequence

3034. The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earths crust is_________?
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A. 12.5 % -12.5 % 75%

B. 64.7 % 27.4 % 7.9 %

C. 7.9% 27.7 % 64.4

D. none of A & B

3035. In land capability classification, class I-Iv are suitable for:_________?
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A. Suitable for grazing

B. Unsuitable for any agricultural use

C. Suitable for cultivated farming

D. Suitable for forestry

3036. The indicator used for estimation of the soil available boron is_______?
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A. Azomethine-H

B. Phenolpthalein

C. Diphenyle

D. Mixed indicator

3037. Organic (O) horizon is absent in_________?
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A. Non-arable soils

B. Histosols

C. Mollisols

D. Arable soils

3038. _________is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?
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A. Nitrogen

B. Potassium

C. Calcium

D. Aluminium

3039. __________ particles range in diameter between 0.02 to 0.002 mm:
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A. None of the above

B. Sand

C. Clay

D. Silt

3040. The term rhizosphere was coined by:___________?
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A. Winogrdsky

B. Hiltner

C. Baussingault

D. Liebig

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