Lubricants MCQ Multiple Choice Questions Answers | Quiz for Practice

Q: 1. Viscosity index can be defined as

Correct Answer is: (L-U / L-H) X 100

Q: 2. Animal and vegetable oils are also used as

Correct Answer is: Blending agent

Q: 3. Animal and vegetable oils possess

Correct Answer is: Good oiliness

Q: 4. Antiwear additive in extreme pressure additive is

Correct Answer is: Tricresyl phosphate

Q: 6. Coefficient of friction for boundary lubrication is

Correct Answer is: 0.05 to 0.15

Q: 7. Coefficient of friction in fluid film or hydrodynamic lubrication is

Correct Answer is: 0.001 to 0.03

Q: 8. Ethanol is used as

Correct Answer is: Polymeric thickener

Q: 10. Identify liquid lubricant from the following

Correct Answer is: Lubricating oil

Q: 12. Important extreme pressure additives contains functional group from following

Correct Answer is: All of above

Q: 13. Length of hydrocarbon chain in petroleum oils varies between about

Correct Answer is: 12 to 50 Carbon atoms

Welcome to our comprehensive collection of Lubricants MCQs! These multiple-choice questions are designed to help students and exam aspirants test and enhance their knowledge of lubricants and their applications.

About Lubricants MCQ Questions

Lubricants MCQs cover a wide range of topics including the properties, types, and functions of lubricants. Key concepts such as viscosity, lubrication mechanisms, and the role of additives are thoroughly explored to ensure a deep understanding of the subject.

Why Practice Lubricants Objective Questions?

Practicing these objective questions offers several benefits. They help in preparing for school and college exams, competitive exams, and interviews. Regular practice enhances your understanding of lubricants, improves recall, and builds confidence in applying the knowledge in real-world scenarios.

Who Should Use These MCQs?

Students preparing for school or college exams
Competitive exam aspirants
Candidates preparing for interviews

Lubricants MCQ Questions for Practice

1. Viscosity index can be defined as

(L-H / L-U) X 100
(L-H / L+U) X 100
(L-U / L-H) X 100
(L+U / L-H) X 100

2. Animal and vegetable oils are also used as

Solvent agent
Extreme pressure additives
Oiliness carrier
Blending agent

3. Animal and vegetable oils possess

Optimum oiliness
None of above
Good oiliness
Poor oiliness

4. Antiwear additive in extreme pressure additive is

Mica
Graphite
Soapstone
Tricresyl phosphate

5. Calcium soap base grease is also called as

Axle grease
Cup grease
Soap grease
Greases

6. Coefficient of friction for boundary lubrication is

0.5 to 0.15
0.05 to 0.15
0.5 to 15
0.005 to 0.05

7. Coefficient of friction in fluid film or hydrodynamic lubrication is

0.001 to 0.03
None of above
0.1 to 0.3
0.01 to 0.03

8. Ethanol is used as

Polymeric thinner
None of above
Polymeric thickener
Polymer

9. Graphite is .............. lubricant.

Semi solid
None of above
Solid
Liquid

10. Identify liquid lubricant from the following

Mo Disulphide
Soapstone
Graphite
Lubricating oil

11. Identify the odd type of lubricant from following

Gaseous
Solid
Semi solid
Liquid

12. Important extreme pressure additives contains functional group from following

Phosphides
All of above
Chlorides
Sulphides

13. Length of hydrocarbon chain in petroleum oils varies between about

21 to 30 Carbon atoms
12 to 50 Carbon atoms
0 to 12 Carbon atoms
0 to 50 Carbon atoms

14. Minimum separating distance in hydrodynamic lubrication is

10000 A⁰
10 A⁰
100 A⁰
1000 A⁰

15. Special additives added to mineral oils are known as

Mineral additives
Lubricating additives
Extreme pressure additives
Special additives