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Acidizing interview questions
Acidizing interview questions
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Total Questions: 14
1. 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
Show Correct Answer
Correct Answer is :
Mgs of KOH
2. The fatty oils mostly constitute _________
A. Glycerine
B. Glycol
C. Ethanol
D. Glycerol
Show Correct Answer
Correct Answer is :
Glycerol
3. The acid content ______ with time.
A. Decreases
B. Increases
C. Remains constant
D. Becomes zero
Show Correct Answer
Correct Answer is :
Increases
4. Periodic determination of acid number is useful to indicate the progress of________
A. Oxidation number
B. Reduction number
C. Acidic number
D. Neutralisation number
Show Correct Answer
Correct Answer is :
Oxidation number
5. The acid value of the lubricating oil is must be less than _______
A. 7
B. 0.7
C. 1
D. 0.1
Show Correct Answer
Correct Answer is :
0.1
6. The unblended petroleum oils must have ______ neutralisation values.
A. Very high
B. Very low
C. Negligible
D. Zero
Show Correct Answer
Correct Answer is :
Very low
7. Compounded oils have higher neutralisation values.
A. TRUE
B. FALSE
C.
D.
Show Correct Answer
Correct Answer is :
TRUE
8. The higher values of blended oils is because of the presence of ___________
A. Catalyst
B. Salts
C. Additives
D. Reagents
Show Correct Answer
Correct Answer is :
Additives
9. Darkening of the oil colour takes place due to ________
A. Oxidation
B. Reduction
C. Hydrolysis
D. Catalysis
Show Correct Answer
Correct Answer is :
Oxidation
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
Show Correct Answer
Correct Answer is :
Corrosive nature
11. 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)
Show Correct Answer
Correct Answer is :
Acid value= (volume of 0.1N KOH used*56)/(weight of oil taken)
12. The corrosion problems are caused by _____ in lubricating oil.
A. Potassium chloride
B. Naphthenic acid
C. Sodium chloride
D. Carbon dioxide
Show Correct Answer
Correct Answer is :
Naphthenic acid
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
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Correct Answer is :
Spectroscopic methods
14. In potentiometric titration, the sample is dissolved in _____ and ______
A. Toulene, propanol
B. Toulene and phenolphthalein
C. Toulene and phenol
D. Toulene and benzene
Show Correct Answer
Correct Answer is :
Toulene, propanol
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