MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Examples of micro biota are____________________? |
| A. | Protozoa |
| B. | Virus |
| C. | Both a & b |
| D. | None of the above |
| Answer» D. None of the above | |
| 2. |
Examples of macrobiota are______________________? |
| A. | Enchytrids |
| B. | Fungus |
| C. | Bacteria |
| D. | Plants |
| Answer» B. Fungus | |
| 3. |
Equation of Ozone is________________________? |
| A. | O2 + O =O3 |
| B. | O3 + O |
| C. | O2 O |
| D. | None of the above |
| Answer» B. O3 + O | |
| 4. |
Elements essentially required for growth of all plants species are___________________? |
| A. | 32 |
| B. | 15 |
| C. | 16 |
| D. | 3 |
| Answer» D. 3 | |
| 5. |
Electrical conductivity of saturated paste is written as____________________? |
| A. | ECP |
| B. | ECe |
| C. | ECs |
| D. | Ecw |
| Answer» D. Ecw | |
| 6. |
Deficiency of B can be corrected through application of chemical fertilizer of_________________? |
| A. | Solubor |
| B. | Boric acid |
| C. | Borax |
| D. | All the above |
| Answer» E. | |
| 7. |
Deep percolation from a soil profile is generally measured by a device known as_____________________? |
| A. | Hydrometer |
| B. | Lysimeter |
| C. | Thermometer |
| D. | Tensiometer |
| Answer» C. Thermometer | |
| 8. |
DAP fertilizer available in Pakistan contains__________________________? |
| A. | 18% N & 46% P2O5 |
| B. | 46%N & 18%P2O3 |
| C. | 100%P2O3 |
| D. | 50%P2O3 |
| Answer» B. 46%N & 18%P2O3 | |
| 9. |
Cyclic salts are mostly of ______________________? |
| A. | SO4 |
| B. | HCO₃ |
| C. | Cl– |
| D. | None of the above |
| Answer» D. None of the above | |
| 10. |
Corrositivity of water is an indication of___________________? |
| A. | Salinity |
| B. | Property of polluted material |
| C. | Both a & b |
| D. | None of the above |
| Answer» D. None of the above | |
| 11. |
Common soils found in Pakistan are___________________? |
| A. | Arid soils |
| B. | Inceptisols |
| C. | Entisols |
| D. | All the above |
| Answer» E. | |
| 12. |
Color off basic matic rock is_____________________? |
| A. | Light green |
| B. | Dark colored |
| C. | Yellow |
| D. | Blue |
| Answer» C. Yellow | |
| 13. |
Color of fertile soil is_____________________? |
| A. | White |
| B. | Green |
| C. | Brown |
| D. | Black |
| Answer» E. | |
| 14. |
Clear water with organic matter or sediment and minimum biological activity is known as__________________? |
| A. | Oligotrophic |
| B. | Mestrophic |
| C. | Eutrophic |
| D. | Hydrotrophic |
| Answer» B. Mestrophic | |
| 15. |
Chromium (Cr) is a____________________? |
| A. | Macro element |
| B. | Secondary element |
| C. | Heavy metal |
| D. | Free element |
| Answer» D. Free element | |
| 16. |
Chitin and steroids are_____________________? |
| A. | Lipids |
| B. | Carbohydrates |
| C. | Proteins |
| D. | Waxes |
| Answer» C. Proteins | |
| 17. |
C12H12N-NaO8S2 is the chemical formula of ____________________? |
| A. | Activated charcoal |
| B. | Azomethine H |
| C. | Carbonated sodium sulphate |
| D. | None of the above |
| Answer» C. Carbonated sodium sulphate | |
| 18. |
Buffer solution is a solution which resist change in __________________ ? |
| A. | pH |
| B. | SAP |
| C. | EC |
| D. | RSC |
| Answer» B. SAP | |
| 19. |
Boron concentration is irrigation water is considered safe only upto_________________? |
| A. | 0.7 ppm |
| B. | 1.5 ppm |
| C. | 2 ppm |
| D. | 3 ppm |
| Answer» B. 1.5 ppm | |
| 20. |
Biochemical reduction of nitrate to nitrite or gaseous nitrogen is called ________________________? |
| A. | Reduction |
| B. | Oxidation |
| C. | Denitrification |
| D. | None of the above |
| Answer» D. None of the above | |
| 21. |
Auxins promote___________________? |
| A. | Cell elongation |
| B. | Cell division |
| C. | Both a & b |
| D. | None of the above |
| Answer» B. Cell division | |
| 22. |
Attraction between similar particles is called____________________? |
| A. | Adhesion |
| B. | Cohesion |
| C. | Vander wall |
| D. | All the above |
| Answer» C. Vander wall | |
| 23. |
Antioxidant is used to reduce the process of_____________________? |
| A. | Reduction |
| B. | Oxidation |
| C. | Both a & b |
| D. | Dehydration |
| Answer» C. Both a & b | |
| 24. |
An ion or molecule in the coordination sphere central ion is called__________________? |
| A. | Complexion |
| B. | Ligand |
| C. | Chelate |
| D. | Potential |
| Answer» C. Chelate | |
| 25. |
An expression of the intensity of the basic or a acidic condition of a liquid or of soil is called_____________________? |
| A. | ESR |
| B. | SAR |
| C. | EC |
| D. | pH |
| Answer» E. | |
| 26. |
Algal photosynthesis increases pH of water and releases___________________? |
| A. | O2 |
| B. | CO2 |
| C. | SO3 |
| D. | All the above |
| Answer» C. SO3 | |
| 27. |
Age of Earth is_____________________? |
| A. | 4.5 billion years |
| B. | 4 billion years |
| C. | 1 billion years |
| D. | 6 billion years |
| Answer» B. 4 billion years | |
| 28. |
Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________? |
| A. | Agregation of soil particles |
| B. | Cementing of soil particles |
| C. | Dispersion of soil particles |
| D. | All the above |
| Answer» D. All the above | |
| 29. |
Acid soils of the world’s arable comprise up to_____________________? |
| A. | 40% |
| B. | 30% |
| C. | 58% |
| D. | 20% |
| Answer» B. 30% | |
| 30. |
Acid soil contain pH____________________? |
| A. | <7 |
| B. | >7 |
| C. | >7.0 |
| D. | 8.5 |
| Answer» B. >7 | |
| 31. |
Accumulation of soluble salts root zone is known as____________________? |
| A. | Desodication |
| B. | Sodication |
| C. | Degradation |
| D. | Salininzation |
| Answer» E. | |
| 32. |
According to WAPDA, the ECe of the salt free soil should remain__________________? |
| A. | < 4 dsm-1 |
| B. | Equal to 4 dsm-1 |
| C. | 4-8 dsm-1 |
| D. | None of the above |
| Answer» B. Equal to 4 dsm-1 | |
| 33. |
A treeless artic plain is called as___________________? |
| A. | Glaciers |
| B. | Barren land |
| C. | Tundra |
| D. | None of the above |
| Answer» D. None of the above | |
| 34. |
A soil with an ESP greater than 15 is usually classified as___________________? |
| A. | Sodic soil |
| B. | Saline soil |
| C. | Acidic soil |
| D. | None of the above |
| Answer» B. Saline soil | |
| 35. |
A soil is classified as sodic soil when______________________? |
| A. | EC is 8.5 |
| B. | SAR is >13 |
| C. | All the above |
| Answer» C. All the above | |
| 36. |
A soil is categorized as saline when EC of saturation extract is______________________? |
| A. | >4dsm-1 |
| B. | 0.4dsm-1 |
| C. | 0.4 4.0 dsm-1 |
| Answer» B. 0.4dsm-1 | |
| 37. |
A compound toxic to crop formed by the thermal decomposition of urea is_________________? |
| A. | Uric acid |
| B. | Biurct (NH2CONH CONH2 H2O) |
| C. | Diuret |
| D. | Both b & c |
| Answer» C. Diuret | |