MCQOPTIONS
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MCQOPTIONS
This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The cooling of molten urea by air in the tower is called |
| A. | Prilling |
| B. | Evaporation |
| C. | Condensation |
| D. | Crystallization |
| Answer» B. Evaporation | |
| 2. |
The fertility of the soil is improved by |
| A. | Rotation of the crops |
| B. | Adding lime to the acid salts |
| C. | Adding manure and growing legumes |
| D. | All |
| Answer» E. | |
| 3. |
Which of the following is incorrect statement about nitrogen importance? |
| A. | It enhances plant growth |
| B. | It is involved in the synthesis of protein and nucleic acids |
| C. | It accelerates fruits and flowers growth |
| D. | It is involved in the chlorophyll synthesis |
| Answer» D. It is involved in the chlorophyll synthesis | |
| 4. |
The fertilizers which provide single nutrient from NPK are called ______ fertilizer. |
| A. | Straight |
| B. | Compound |
| C. | Both a and b |
| D. | None of the above |
| Answer» B. Compound | |
| 5. |
Which of the following is macronutrient? |
| A. | Cu |
| B. | Cl |
| C. | H |
| D. | Zn |
| Answer» D. Zn | |
| 6. |
Addition of urea to the soil is _________ reaction. |
| A. | Endothermic |
| B. | Exothermic |
| C. | Both a and b |
| D. | No heat energy is involved |
| Answer» C. Both a and b | |
| 7. |
Which of the following is the most suitable catalyst for ammonia synthesis? |
| A. | Pt |
| B. | ZnO + Cr2O3 |
| C. | Fe in fused mixture of Al2O3 + SiQ2 + MgO |
| D. | All of the above |
| Answer» D. All of the above | |
| 8. |
Which of the following fertilizers is not useful for paddy rice? |
| A. | Urea |
| B. | DAP |
| C. | Ammonium sulphate |
| D. | Ammonium nitrate |
| Answer» E. | |
| 9. |
Which of the following potassium fertilizers are more useful for horticultural crops tobacco & potatoes? |
| A. | KCI |
| B. | KNO3 |
| C. | K2SO4 |
| D. | KMnO4 |
| Answer» C. K2SO4 | |
| 10. |
DAP (Diammonium hydrogen phosphate) contains _________ plant nutrients. |
| A. | 60% |
| B. | 65% |
| C. | 70% |
| D. | 75% |
| Answer» E. | |
| 11. |
Calcarious material includes |
| A. | Lime stone |
| B. | Marble |
| C. | Chalk |
| D. | All of the above |
| Answer» E. | |
| 12. |
Argillaceous material does not include |
| A. | Vlay |
| B. | Marine shells |
| C. | Slate |
| D. | Blast furnace slag |
| Answer» C. Slate | |
| 13. |
Which of the following processes is used for the synthesis of cement? |
| A. | Dry process |
| B. | Wet process |
| C. | Both |
| D. | None |
| Answer» D. None | |
| 14. |
Phosphorus helps in the growth of |
| A. | Root |
| B. | Leave |
| C. | Stem |
| D. | Seed |
| Answer» E. | |
| 15. |
How many zones through which the charge passes in a rotary kiln? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» B. 3 | |
| 16. |
The nutrients which are required in very small amount for the normal growth of plants are called |
| A. | Nitrogenous fertilizers |
| B. | Micronutrients |
| C. | Phosphorus fertilizer |
| D. | All of the above |
| Answer» C. Phosphorus fertilizer | |
| 17. |
Which one of the following set of raw material is most suitable for manufacture of urea? |
| A. | CH4 N2 and CO2 |
| B. | H2 N2 and CO |
| C. | H2 CO2 and H2O |
| D. | H2O N2 and H2 |
| Answer» B. H2 N2 and CO | |
| 18. |
Which one of the following statement is correct for urea? |
| A. | It is a synthetic fertilizer |
| B. | It is a natural fertilizer |
| C. | It provides micronutrients to the plants |
| D. | It is an inorganic water soluble compound |
| Answer» B. It is a natural fertilizer | |
| 19. |
Which one of the following is an inorganic fertilizer? |
| A. | Manure |
| B. | Urea |
| C. | Ammonium nitrate |
| D. | All |
| Answer» D. All | |
| 20. |
Which one of the following fertilizers provides the nitrogen and phosphorus to the plant? |
| A. | Urea |
| B. | Calcium superphosphate |
| C. | Diammonium phosphate |
| D. | Potassium nitrate |
| Answer» D. Potassium nitrate | |
| 21. |
The potassium present in plant help the plant to |
| A. | Form starch sugar and fibrous material |
| B. | Ripen the seeds and fruits |
| C. | Increase the resistance against disease |
| D. | All the above statements are correct |
| Answer» E. | |
| 22. |
Cement is a mixture of |
| A. | Clay and clinker |
| B. | Clay lime stone and gypsum |
| C. | Lime stone and gypsum |
| D. | Lime stone and clay |
| Answer» C. Lime stone and gypsum | |
| 23. |
What is clinker? |
| A. | Roasted calcareous material |
| B. | Roasted argillaceous material |
| C. | Roasted calcareous and argillaceous material |
| D. | Roasted gypsum |
| Answer» D. Roasted gypsum | |
| 24. |
Cement is a mixture of so many compounds roasted in rotary kiln. Which substances has greater percentage? |
| A. | Lime (CaO) |
| B. | Silica (SiO2) |
| C. | Alumina (Al2O3) |
| D. | Magnesia (MgO) |
| Answer» B. Silica (SiO2) | |
| 25. |
Which one of the following raw material is not present in the cement? |
| A. | Lime stone |
| B. | Gypsum |
| C. | KNO3 |
| D. | Iron oxide |
| Answer» E. | |
| 26. |
Which sequence of steps is correct for the manufacture of cement? |
| A. | Crushing heating mixing grinding |
| B. | Crushing mixing heating grinding and mixing |
| C. | Crushing grinding mixing heating |
| D. | Mixing heating grinding crushing |
| Answer» D. Mixing heating grinding crushing | |
| 27. |
The sequence of zones in the rotary kiln are as |
| A. | Dry zone burning zone decomposition zone cooling zone |
| B. | Cooling zone burning zone decomposition zone dry zone |
| C. | Burning zone cooling zone decomposition zone |
| D. | Dry zone decomposition zone burning zone cooling zone |
| Answer» E. | |
| 28. |
The composition of mixture of clay and lime stone in the raw for cement material is |
| A. | 75% lime stone and 25% clay |
| B. | 25% lime stone and 75% clay |
| C. | 15% lime stone and 55% clay |
| D. | 55% lime stone and 15% clay |
| Answer» B. 25% lime stone and 75% clay | |
| 29. |
The important function of burning zone in the rotary kilm is |
| A. | To dry the moisture of slurry |
| B. | To decompose lime stone to unslaked lime |
| C. | Combination of different oxides like CaO SiO2 Fe2O3 and Al2O3 |
| D. | To reduce the impurities |
| Answer» D. To reduce the impurities | |