Interview question based on skill :
Take as many assements as you can to improve your validate your skill rating
Total Questions: 15
1. The most common reason for the degradation of the petroleum oil is their ______
Correct Answer is : Oxidation
2. The oxidation inhibitors terminate the hydro peroxide chain by combining with ______
Correct Answer is : Hydrogen peroxide
3. ___________ are surface active additives.
Correct Answer is : Rust inhibitors
4. Tiadiazole and triazole derivatives are used for ______
Correct Answer is : Copper corrosion
5. To reduce the wear and tear of the gears _______ are used
Correct Answer is : Anti wear agents
6. In steel and steel lubrication, the zinc dialkyl dithiosulphates forms _______
Correct Answer is : ZnS
7. In automotive applications _______ are used.
Correct Answer is : Friction modifiers
8. Friction modifiers have 12-18 carbons.
Correct Answer is : TRUE
9. The oil insoluble sludge can be reduced by using _______
Correct Answer is : detergents
10. The commonly used dispersant is ________
Correct Answer is : Poly butyl succinic acid
11. On cooling below the pour point, the wax will be _______
Correct Answer is : Crystallized
12. The viscosity index can be improved by adding ______
Correct Answer is : Linear polymers
13. Gear oils on adding viscosity index improves can be used in ______
Correct Answer is : Air crafts
14. Foaming of oils can be prevented by using ______
Correct Answer is : Foam inhibitors
15. vegetable oils are added to the lubricants to improve their ______
Correct Answer is : Oiliness
