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MCQs 1: Ligands that occur in Pakistan soils are__________________?

OH1 HCO2 SO4-2 OH CO3-2 SO4-2 All the above
Answer Explanation

MCQs 2: pH in coniferous forest is__________________?

Less than 7 Neutral Greater than 7 Basis
Answer Explanation

MCQs 3: A soil is categorized as saline when EC of saturation extract is______________________?

>4dsm-1 0.4dsm-1 0.4 4.0 dsm-1
Answer Explanation

MCQs 4: How much percentage of soils of Pakistan are deficient in P______________________?

60 50-70 80-90
Answer Explanation

MCQs 5: Microorganisms have C/N ratio of____________________?

2:1 4:1 12:1 20:1
Answer Explanation

MCQs 6: The zorawar is brand name of ___________________?

TSP DAP MAP None of the above
Answer Explanation

MCQs 7: The factor used for conversion of P to P2O3 is____________________?

0.453 0.643 0.436 None of the above
Answer Explanation

MCQs 8: Acid soil contain pH____________________?

<7 >7 >7.0 8.5
Answer Explanation

MCQs 9: DAP fertilizer available in Pakistan contains__________________________?

18% N & 46% P2O5 46%N & 18%P2O3 100%P2O3 50%P2O3
Answer Explanation

MCQs 10: Buffer solution is a solution which resist change in __________________ ?

pH SAP EC RSC
Answer Explanation

MCQs 11: The term applied to a material which tends to absorb moisture from the atmosphere is called__________________?

Capillary Hydroscopic Available Gravitational
Answer Explanation

MCQs 12: The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?

3-15 meq/100g CEC 40 meq/100g CEC 50 meq/100g CEC None of the above
Answer Explanation

MCQs 13: A compound toxic to crop formed by the thermal decomposition of urea is_________________?

Uric acid Biurct (NH2CONH CONH2 H2O) Diuret Both b & c
Answer Explanation

MCQs 14: The unit of electrical conductivity is____________________?

dsm-1 mmhos/m ms/cm All the above
Answer Explanation

MCQs 15: The reaction of Na2 CO3 salt is____________________?

Alkaline Neutral Acidic None of the above
Answer Explanation

MCQs 16: Most of the productive soils in Pakistan have pH______________________?

Between 7.5 to 8.5 8.5 None of the above
Answer Explanation

MCQs 17: The deficient level of N (%) in plants suggested by various workers is____________________?

0% 3% 5% 10%
Answer Explanation

MCQs 18: The chemical formula of Hematite is_____________________?

AL (OH)2 Fe2O3 Fe OOH None of the above
Answer Explanation

MCQs 19: The little clay mineral is_____________________?

Non-expending Expending None or little expending None of the above
Answer Explanation

MCQs 20: The net reaction of photosynthesis is_____________________?

CO2 + H2O light O2 + (CH3O) CaCO3 + 2HCl CaCl2 H2O+CO3 ((CH2O) + O2 CO2 + H2O) None of the above
Answer Explanation

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