agriculture MCQs – Page 158

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 Review each marked answer and report any item that may be outdated or unclear.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

3141. The complex fertilizer Nitrophos available in the market contains_____________________?
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A. 23%N & 23% P2O3

B. None of the above

C. 25%N & 23% P2O3

D. 46%N & 23% P2O3

3142. Size of clay particle is___________________?
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A. 0.2mm

B. 0.02mm

C. 2mm

D. 0.002mm

3143. The molar mass of NaCl is_____________________?
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A. 43.28

B. 50.58

C. 58.58

D. 56.58

3144. Deep percolation from a soil profile is generally measured by a device known as_____________________?
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A. Hydrometer

B. Tensiometer

C. Lysimeter

D. Thermometer

3145. pF unit is used for the measurement of_____________________?
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A. Negative soil water potential

B. Hydraulic conductivity

C. Hydraulic potential

D. All the above

3146. Gold is___________________?
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A. Primary element

B. Native element

C. Heavy metal

D. Secondary element

3147. The process of accumulation of excess quantity of nutrients in water causing O2 deficiency is known as_____________________?
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A. Eutrophication

B. Nitrification

C. Sedimentation

D. Denitrification

3148. Particular matter consists of____________________?
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A. Solid and liquid

B. None of the above

C. CO2 & N

D. Solid and gases

3149. Secondary air pollution is _____________________?
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A. CO3

B. HNO3

C. CO2

D. All the above

3150. Organic P content in soil, by ignition method is estimated by igniting the soil at ____________________?
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A. 1000C

B. 550C

C. 250C

D. 1250C

3151. How much percentage of soils of Pakistan are deficient in P______________________?
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A. 80-90

B. 60

C. 50-70

3152. Biochemical reduction of nitrate to nitrite or gaseous nitrogen is called ________________________?
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A. Reduction

B. None of the above

C. Denitrification

D. Oxidation

3153. The exact chemical formula of DAP fertilizer is___________________?
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A. (NH2) HPO4

B. NH4H2PO4

C. NH4H2PO4

D. Both a & c

3154. The chemical formula of Hematite is_____________________?
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A. AL (OH)2

B. Fe2O3

C. Fe OOH

D. None of the above

3155. Silt stones consists of grains whose size range from____________________?
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A. 0.625 mm

B. 0.004 mm

C. 0.0625 mm

D. Both b & c

3156. Ligands that occur in Pakistan soils are__________________?
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A. CO3-2 SO4-2

B. SO4-2 OH

C. All the above

D. OH1 HCO2

3157. Weathering is_______________________?
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A. Destructive process

B. Constructive process

C. Both a & b

D. None of the above

3158. Schist is example of____________________?
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A. Stone

B. Name of mountain

C. None of the above

D. Metamorphic rock

3159. The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are____________________?
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A. ECi:

B. ECi:>1.5, SAR > 10 & RSC> 2.5

C. ECi:>1.5, SAR 2.5

D. Both a & b

3160. Soil structure without aggregation is known as____________________?
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A. Platy

B. Granular

C. Massive

D. Both b & c

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