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Oil interview questions
Oil interview questions
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Total Questions: 17
1. Which of the following is responsible for rancidity?
A. Alkalies
B. Ketones
C. Aldehydes
D. Alcohols
Show Correct Answer
Correct Answer is :
Aldehydes
2. The number of milligrams of KOH required for the saponification of one gram of oil or fat is called
A. Acid number
B. Iodine number
C. Richert-Meissl number
D. Saponification number
Show Correct Answer
Correct Answer is :
Saponification number
3. Iodine number is defined as number of grams of iodine needed for the iodination of ________ gram/grams of oil or fat.
A. 1
B. 5
C. 100
D. 1000
Show Correct Answer
Correct Answer is :
100
4. Richert-Meissl number is defined as the volume of 0.1M KOH solution required for the neutralisation of _______ gram/grams of fat or oil.
A. 1
B. 5
C. 100
D. 1000
Show Correct Answer
Correct Answer is :
5
5. The stearate ion has a ________ carbons long hydrocarbon chain.
A. 17
B. 19
C. 21
D. 23
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Correct Answer is :
17
6. Paraffins are obtained by______ process from petroleum.
A. fractional distillation
B. sedimentation
C. filtration
D. fermentation
Show Correct Answer
Correct Answer is :
fractional distillation
7. Paraffins are mostly used as_______
A. dye
B. lubricant
C. catalyst
D. coolent
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Correct Answer is :
lubricant
8. Liquid paraffin is used as________
A. Dye
B. Medical purposes
C. Inhibitor
D. Catalyst
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Correct Answer is :
Medical purposes
9. General formula for Naphthenes
A. CnH2n+2
B. CnH2n
C. CnH2n-6
D. CnH2n-2
Show Correct Answer
Correct Answer is :
CnH2n
10. Naphthenes are also called as _______
A. cyclo alkanes
B. aromatics
C. cyclo alkenes
D. cyclo alkynes
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Correct Answer is :
cyclo alkanes
11. Naphthenes having more than 20 C-atoms are called as________
A. cyclo alkenes
B. cyclo alkanes
C. cyclo paraffins
D. cyclo alkynes
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Correct Answer is :
cyclo paraffins
12. Olefins are slightly soluble in _____
A. water
B. alcohol
C. kerosene
D. ethanol
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Correct Answer is :
water
13. The chemical structure of Olefins can be given by ________
A. --(--CH
2
---CH
2
--)
n
--
B. --(--CH
2
---CH--)--
C. --(--CH
2
---CH--)
n
--
D. --(--CH
2
---CH
3
--)
n
--
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Correct Answer is :
--(--CH
2
---CH--)--
14. Olefins containing 2 to 4 carbon atoms are ______ at ordinary temperature.
A. solid
B. liquid
C. gaseous
D. semisolid
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Correct Answer is :
gaseous
15. Aromatic compounds are produced from ________
A. natural gas
B. coal tar
C. oil gas
D. heavy gas
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Correct Answer is :
coal tar
16. Aromatic compounds are _____ with water.
A. dissolves
B. immiscible
C. forms lump
D. easily dissolves
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Correct Answer is :
immiscible
17. The flame colour of the aromatic compounds is ________
A. yellow
B. orange
C. green
D. pink
Show Correct Answer
Correct Answer is :
yellow
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