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Class 12
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Qualitative Analysis of Oils and Fats
Qualitative Analysis of Oils and Fats
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1)
In which one of the following solvents oils and fats are soluble?
Distilled water
Chloroform
Dil. HCl
Rain water
2)
Which product is produced when ghee is heated with crystals of potassium bisulphate?
Ethanol
Benzaldehyde
Acrolein
Formaldehyde
3)
Rose red colour appears when vanaspati ghee is subjected to Baudouin test. What does it indicate?
Presence of sunflower oil
Presence of olive oil
Presence of seasame oil
Presence of mustard oil
4)
Which one of the following tests is used to determine the degree of unsaturation in the given sample of oil or fat?
Huble’s test
Iodine test
Baudouin test
Acrolein test
5)
What is the process of slow oxidation of fats and oils present in the food materials resulting in some bad smelling compounds called?
Rancidity
Hydrogenation
Hydrolysis
Carboxylation
6)
What are the decomposition products of fats?
Glycerol and higher fatty acids
Glycerol and hydrochloric acid
Glycerol and acetic acid
Glycerol and sulphuric acid
7)
Which one of the following tests is used to determine the presence of seasame oil in a given sample of ghee?
Acrolein test
Huble's test
Translucent spot test
Baudouin test
8)
Which one of the following reagents is used to test the presence of unsaturation in the given sample of oil or fat?
Huble's reagent
furfuraldehyde
Potassium bisulphate solution
Alcohol
9)
What is acrolein?
An alcohol
A hydrocarbon
An unsaturated aldehyde
A ketone
10)
While performing an experiment in the lab, the teacher asked students to detect the presence of seasame oil in the given sample of ghee through Baudouin test. Four students A, B, C and D selected reagents for the Baudouin test which are given in the table. Which student selected the correct reagent?
A
B
C
D