30 Questions
What is the primary difference between oils and fats?
The nature of the monocarboxylic acid present in the glyceride
What is the approximate percentage of oleic acid in lard?
45%
What is the purpose of hydrolysis with alkali in the processing of oils and fats?
To separate glycerol from fatty acids
Which of the following acids is NOT a component of lard?
Butyric acid
What is the primary use of the fatty acids derived from oils and fats?
Making soaps, lubricants, and detergents
What is the reaction product of C15H31COOC16H33 with NaOH?
C16H33OH and C15H31COONa
What is the purpose of using waxes in manufacturing processes?
To create polish and ink formulas
What is the characteristic of sodium palmitate?
Do not produce OH ions on hydrolysis
What is the purpose of using sodium alkyl benzene sulphonates?
To act as a good detergent
What is the characteristic of quaternary ammonium salts?
Have long chain alkyl group
What is the primary difference between oils and fats in terms of their physical state?
Oils are liquids at room temperature, while fats are semi-solids or solids.
What can be used to identify pure fats and oils?
Their melting points, specific gravity, and refractive index
What is a characteristic of animal fats that distinguishes them from vegetable fats?
They contain cholesterol
What type of reaction do fats and oils undergo?
Reactions of both carbon-carbon double bonds and ester groups
Why may a substance be classified as a fat in one season and an oil in another?
Because of its physical state, which depends on climate and weather
What is the product formed when ethyl acetate reacts with NaOH?
Sodium acetate
What is the catalyst commonly used in the catalytic hydrogenation of ester?
Copper chromate (CuO.CuCr2 O4 )
What is the reaction product of ethyl acetate with ammonia?
Acetamide
What is the reduction of ester in the presence of Na / C2 H 5 OH known as?
Bouveault Blanc reduction
What is the product formed when ethyl acetate reacts with hydrazine?
Acetohydrazide
What is the product of the reaction between benzoic acid and lithium aluminum hydride?
benzyl alcohol
What is the condition necessary for the esterification of aromatic acid?
presence of a mineral acid
What is the reaction in which benzoic acid reacts with sodium hydroxide to form a salt and water?
neutralization
What is the effect of an ortho substituent on the rate of esterification of aromatic acid?
it decreases the rate
What is the product of the reaction between benzoic acid and manganese dioxide in the presence of carbon monoxide?
benzaldehyde
What is the reaction product of C6H5CHCl2 with H2 and CHCOONa?
C6H5CH=CHCOOH
What is the oxidation product of C6H5CH=CHCH2OH?
C6H5CH=CHCOOH
What is the reaction product of C6H5CHO with CH3COOC2H5?
C6H5CH=CHCOOC2H5
What is the geometrical isomerism exhibited by C6H5CH=CHCOOH?
cis-trans isomerism
What is the physical state of C6H5CH=CHCOOH at room temperature?
solid
This quiz covers the properties and sources of fats and oils, including their physical characteristics and solubility in different solvents.
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