What type of plant is sugarcane in terms of its photosynthetic pathway?
Correct answer C. C4 plant
Subject / 2,686 questions
Agriculture MCQs
Page 21 of Agriculture multiple-choice questions with answers. Tap an option to check yourself.
Page 21 of 135
What is the lower limit of plant-available soil water called?
Correct answer D. Wilting point
Which compound has the formula (NH4)2SO4·FeSO4·6H2O?
Correct answer A. Ferrous Ammonium sulphate
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Which compound has the chemical formula C12H12N-NaO8S2?
Correct answer A. Azomethine H
Which formula is used to calculate residual sodium carbonate (RSC)?
Correct answer A. RSC = (CO3 + HCO3) - (Ca + Mg)
What should be used when handling concentrated acids, bases or other hazardous chemicals?
Correct answer B. Fume hoods
What term expresses how acidic or basic a liquid or soil is?
Correct answer A. pH
What is a soil called whose saturation extract has EC above 4 dS/m, an exchangeable sodium percentage below 15 and a pH usually below 8.5?
Correct answer C. Saline soils
Which of the following is a secondary air pollutant?
Correct answer B. HNO3
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The permanent wilting point of clayey soils is not lower than what moisture content?
Correct answer D. 10%
Which gases are used to manufacture urea?
Correct answer A. NH3 & CO2
Acid soils make up as much as what share of the world’s arable land?
Correct answer C. 40%
What is the time for which water or an ion stays in a particular location called?
Correct answer D. Residence time
Which soils are common in Pakistan?
Correct answer D. All of the above
Which of the following are examples of microbiota?
Correct answer C. Both A & B
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Which group of saprophytic fungi is widely distributed?
Correct answer A. Ascomycetes
Which compound decomposes slowly in soil?
Correct answer D. Lignin
Who is credited with defining humic acid?
Correct answer C. Felbeck
Which reagent is used to extract humic substances from soil?
Correct answer C. NaOH
What nutrient content does the compound fertiliser Nitrophos contain?
Correct answer C. 23% N & 23% P2O5