MCQOPTIONS
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MCQOPTIONS
This section includes 23 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The corrosion problems are caused by _________ in lubricating oil. |
| A. | Potassium chloride |
| B. | Naphthenic acid |
| C. | Sodium chloride |
| D. | Carbon dioxide |
| Answer» C. Sodium chloride | |
| 2. |
The total acid number of an oil is given by __________ |
| A. | Acid value = (volume of 0.1N KOH taken*56)/(weight of oil used) |
| B. | Acid value = (volume of 0.01N KOH used*56)/(weight of oil taken) |
| C. | Acid value = (volume of 0.1N KOH used*56)/(weight of oil taken)d) Acid value = (volume of 0.01N KOH taken*56)/(weight of oil use |
| D. | Acid value = (volume of 0.01N KOH used*56)/(weight of oil taken)c) Acid value = (volume of 0.1N KOH used*56)/(weight of oil taken)d) Acid value = (volume of 0.01N KOH taken*56)/(weight of oil used) |
| Answer» D. Acid value = (volume of 0.01N KOH used*56)/(weight of oil taken)c) Acid value = (volume of 0.1N KOH used*56)/(weight of oil taken)d) Acid value = (volume of 0.01N KOH taken*56)/(weight of oil used) | |
| 3. |
The neutralisation number cannot give the __________ of the lubricating oil. |
| A. | Corrosive nature |
| B. | Amount of acid |
| C. | Amount of base |
| D. | Moisture level |
| Answer» B. Amount of acid | |
| 4. |
Darkening of the oil colour takes place due to ________ |
| A. | Oxidation |
| B. | Reduction |
| C. | Hydrolysis |
| D. | Catalysis |
| Answer» B. Reduction | |
| 5. |
The neutralisation number is increased due to _________ |
| A. | Pureness |
| B. | Contamination |
| C. | Hydrolysis |
| D. | Catalysis |
| Answer» C. Hydrolysis | |
| 6. |
The higher values of blended oils is because of the presence of ___________ |
| A. | Catalyst |
| B. | Salts |
| C. | Additives |
| D. | Reagents |
| Answer» D. Reagents | |
| 7. |
Periodic determination of acid number is useful to indicate the progress of ________ |
| A. | Oxidation number |
| B. | Reduction number |
| C. | Acidic number |
| D. | Neutralisation number |
| Answer» B. Reduction number | |
| 8. |
Acid number of a lubricating oil is _________ required to neutralise all acidic constituents of 1 g of oil. |
| A. | Mgs of KOH |
| B. | Mgs of K2SO4 |
| C. | Mgs of NaOH |
| D. | Mgs of Na2SO4 |
| Answer» B. Mgs of K2SO4 | |
| 9. |
THE_NEUTRALISATION_NUMBER_IS_INCREASED_DUE_TO_________?$ |
| A. | Pureness |
| B. | Contamination |
| C. | Hydrolysis |
| D. | Catalysis |
| Answer» C. Hydrolysis | |
| 10. |
The neutralisation number cannot give the __________ of the lubricating oil.$ |
| A. | Corrosive nature |
| B. | Amount of acid |
| C. | Amount of base |
| D. | Moisture level |
| Answer» B. Amount of acid | |
| 11. |
Darkening of the oil colour takes place due to ________ |
| A. | Oxidation |
| B. | Reduction |
| C. | Hydrolysis |
| D. | Catalysis |
| Answer» B. Reduction | |
| 12. |
In potentiometric titration, the sample is dissolved in _____ and ______ |
| A. | Toulene, propanol |
| B. | Toulene and phenolphthalein |
| C. | Toulene and phenol |
| D. | Toulene and benzene |
| Answer» B. Toulene and phenolphthalein | |
| 13. |
The other parameters apart from the acid number can also determine by the process _______ |
| A. | Potentiometer titration |
| B. | Colour indicating titration |
| C. | Spectroscopic methods |
| D. | Catalysis |
| Answer» D. Catalysis | |
| 14. |
The corrosion problems are caused by _____ in lubricating oil. |
| A. | Potassium chloride |
| B. | Naphthenic acid |
| C. | Sodium chloride |
| D. | Carbon dioxide |
| Answer» C. Sodium chloride | |
| 15. |
The total acid number of an oil is given by ______ |
| A. | Acid value= (volume of 0.1N KOH taken*56)/(weight of oil used) |
| B. | Acid value= (volume of 0.01N KOH used*56)/(weight of oil taken) |
| C. | Acid value= (volume of 0.1N KOH used*56)/(weight of oil taken) |
| D. | Acid value= (volume of 0.01N KOH taken*56)/(weight of oil used) |
| Answer» D. Acid value= (volume of 0.01N KOH taken*56)/(weight of oil used) | |
| 16. |
The higher values of blended oils is because of the presence of __________? |
| A. | Catalyst |
| B. | Salts |
| C. | Additives |
| D. | Reagents |
| Answer» D. Reagents | |
| 17. |
Compounded oils have higher neutralisation values. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
The unblended petroleum oils must have ______ neutralisation values. |
| A. | Very high |
| B. | Very low |
| C. | Negligible |
| D. | Zero |
| Answer» C. Negligible | |
| 19. |
The acid value of the lubricating oil is must be less than _______ |
| A. | 7 |
| B. | 0.7 |
| C. | 1 |
| D. | 0.1 |
| Answer» E. | |
| 20. |
Periodic determination of acid number is useful to indicate the progress of________ |
| A. | Oxidation number |
| B. | Reduction number |
| C. | Acidic number |
| D. | Neutralisation number |
| Answer» B. Reduction number | |
| 21. |
The acid content ______ with time. |
| A. | Decreases |
| B. | Increases |
| C. | Remains constant |
| D. | Becomes zero |
| Answer» C. Remains constant | |
| 22. |
The fatty oils mostly constitute _________ |
| A. | Glycerine |
| B. | Glycol |
| C. | Ethanol |
| D. | Glycerol |
| Answer» E. | |
| 23. |
Acid number of a lubricating oil is_________required to neutralise all acidic constituents of 1 g of oil. |
| A. | Mgs of KOH |
| B. | Mgs of K<sub>2</sub>SO<sub>4</sub> |
| C. | Mgs of NaOH |
| D. | Mgs of Na<sub>2</sub>SO<sub>4</sub> |
| Answer» B. Mgs of K<sub>2</sub>SO<sub>4</sub> | |