Description : Chemically fats and oils are: (1) Triesters (2) Amines (3) Aldehydes (4) Ketons
Last Answer : (1) Triesters Explanation: Fats and oils are called triglycerides (or triacylcylgerols) because they are esters composed of three fatty acid units joined to glycerol, a trihydroxy alcohol. Fats and oils are composed of molecules known as triglycerides, which are esters.
Description : Chemically, fats are esters of long carbon-chain acids and which of the following: w) ethanol x) glycerol y) ethylene glycol z) sodium hydroxide
Last Answer : ANSWER: X -- GLYCEROL
Description : Which of the following statements is not true about triacylglycerols? (a) When solids and semisolids at room temperature, they are called fats. (b) When liquids at room temperature, they are ... low melting points are composed of saturated fatty acids, causing them to be liquids at room temperature
Last Answer : Triacylglycerols with low melting points are composed of saturated fatty acids, causing them to be liquids at room temperature
Description : Which is used in preparation of dynamite? (1) glycerol (2) ethyl alcohol (3) methyl alcohol (4) glycol
Last Answer : (1) glycerol Explanation: Dynamite is an explosive made of nitroglycerin, sorbents (such as powdered shells or clay) and stabilizers. It was invented by the Swedish chemist and engineer Alfred Nobel in Geesthacht, and patented in 1867.
Description : Which of the following compounds is least soluble in water? (a) Glycerol (b) Ethyl alcohol (c) Ethylene glycol (d) Ethyl chloride
Last Answer : Ethyl chloride
Description : Which of the following is used as an antifreeze? (a) Ethylene glycol (b) Glycerol (c) Diethyl ether (d) Picric acid
Last Answer : Ethylene glycol
Description : Which are not cleaved by `HIO_(4)`? (I) Glycerol (II) glycol (III) 1, 3-propenediol (IV) methoxy-2-propanol
Last Answer : Which are not cleaved by `HIO_(4)`? (I) Glycerol (II) glycol (III) 1, 3-propenediol (IV) methoxy-2-propanol A. ... , IV B. I, II C. II, III D. III, IV
Description : The alcohol used in the preparation of dynamite is----? A. ethyl alcohol B. glycerol (Answer) C. glycol D. methyl alcohol
Last Answer : B. glycerol (Answer)
Description : What role does enzyme pepsin play? (1) It converts fats into acids (2) If converts fats into glycerol (3) It converts proteins into peptones (4) It converts starch into sugar
Last Answer : (3) It converts proteins into peptones Explanation: Pepsin is an endopeptidase that breaks down proteins into peptone and polypeptides. If is produced in the stomach and is one of the main digestive enzymes.
Description : Fats differ from waxes in that fats have : (a) More unsaturation (b) Higher melting points (c) A glycerol backbone (d) Longer fatty acids
Last Answer : A glycerol backbone
Description : Which gas is used for converting vegetable oils into saturated fats? (1) H2 (2) O2 (3) Cl2 (4) SO2
Last Answer : (1) H2 Explanation: Hydrogenation - to treat with hydrogen - is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst. ... oils are derived from polyunsaturated fatty acids (containing more than one carbon-carbon double bonds).
Description : Which of the following compounds will not be classified as lipids? (a) Fats (b) Waxes (c) Soaps (d) Oils
Last Answer : Waxes
Description : Alkaline hydrolysis of oils (or fats) is called : (a) Saponification (b) Fermentation (c) Diazotization (d) Rancidification
Last Answer : Saponification
Description : Liquid oils can be converted to solid fats by (a) Hydrogenation (b) Saponification (c) Hydrolysis (d) Oxidation of double bonds
Last Answer : Hydrogenation
Description : Glycerine and what other substance are made by heatin animal fats or vegetable oils with sodium hydroxide?
Last Answer : ANSWER: SOAP
Description : One of the following is NOT a lipid. Is it: w) fats and oils x) starches y) steroids z) waxes
Last Answer : ANSWER: X -- STARCHES
Description : Which gas is used for converting vegetable oils into saturated fats ? (1) H2 (2) O2 (3) Cl2 (4) SO2
Last Answer : H2
Description : The enzyme that catalyse the changing of emulsified oils to fatty acids and glycerol is -
Last Answer : The enzyme that catalyse the changing of emulsified oils to fatty acids and glycerol is - A. Pepsin B. Lipase C. Amylase D. Sucrose
Description : Esters of fatty acids with higher alcohol other than glycerol are called as (A) Oils (B) Polyesters (C) Waxes (D) Terpenoids
Last Answer : Answer : C
Description : Which one of the following is not likely to be a constituent of vegetable oils? (A) Citric acid (B) Oleic acid (C) Stearic acid (D) Glycerol
Last Answer : (A) Citric acid
Description : Assertion :- Bile helps in emulsification of fats. Reason `:-` During emulsification fat is brokendown into fatty acid and glycerol.
Last Answer : Assertion :- Bile helps in emulsification of fats. Reason `:-` During emulsification fat is brokendown ... D. If both Assertion & Reason are false.
Description : Depot fats of mammalian cells comprise mostly of (A) Cholesterol (B) Cholesterol esters (C) Triacyl glycerol (D) Phospholipids
Description : Saponification: (A) Hydrolysis of fats by alkali (B) Hydrolysis of glycerol by liposes (C) Esterification (D) Reduction
Last Answer : Answer : A
Description : Esters of fatty acids with higher alcohols other than glycerol are said to be (A) Waxes (B) Fats (C) Both (A) and (B) (D) None of these
Description : Glycerol released from adipose tissue by hydrolysis of triglycerides is mainly (A) Taken up by liver (B) Taken up by extrahepatic tissues (C) Reutilised in adipose tissue (D) Excreted from the body FATS AND FATTY ACID METABOLISM 85
Description : Bile, an emulsifier liquid, is made by the liver and later stored within the gallbladder and released in the duodenum. Bile is composed of bile salts, cholesterol and bile pigments. ... enzymes that break fats into simpler fatty acids and glycerol. Digestion System - Image Diversity: gallbladder
Last Answer : What is the adnexal organ of the digestive system in which bile is stored?
Description : What is the indicator for fats oils and waxes?
Last Answer : Need answer
Description : What compound make up fats and oils?
Description : Consider the following statements: 1. Mercury metal exists as a liquid at room temperature. 2. The property of metals by which they can be beaten into thin sheets is called malleability 3. Neutral fats such as butter and vegetable oils ... b) 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only
Last Answer : Ans:(d)
Description : Oils and fats are obtained from (a) Animal sources (b) Vegetable sources (c) Synthesis (d) Both animal and vegetable sources
Description : Oils and fats are (a) Glyceryl esters of higher fatty acids (b) Acetyl esters of higher fatty acids (c) Ethyl esters of fatty acids (d) Methyl esters of fatty acids
Last Answer : Ans:(a)
Description : Which one of the following forms the base of vegetable fibres? (1) Cellulose (2) Proteins (3) Fats (4) Oils
Last Answer : (1) Cellulose Explanation: The principal chemical component of vegetable fibers is cellulose, with varying amounts of lignin and hemicelluloses also usually present; thus, the fibers are also ... bagasse, and banana. Vegetable fibers are usually stiffer but less tough than synthetic fibers.
Description : Drying oils contain a fairly large proportion of – (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids
Last Answer : (4) unsaturated fatty acids Explanation: They contain a high percentage of "polyunsaturates" (polyunsaturated fatty acids). Most drying oils owe their drying properties to the presence of a large percentage of linolenic acid (which derives its name from "linseed"), which is highly unsaturated.
Description : The main cause of rancidity in of fats and foods is the oils - (1) hydrolysis (2) oxidation (3) clarification (4) reduction
Last Answer : (2) oxidation Explanation: Rancidity in foods is due to the complete or incomplete oxidation or hydrolysis of fats and oils when exposed to air light, moisture or by bacterial action, resulting in unpleasant taste and odor.
Description : Saponification involves the hydrolysis of fats and oils by- (1) water (2) washing soda (3) stearic acid (4) caustic soda
Last Answer : (4) caustic soda Explanation: Caustic soda (sodium hydroxide) is a versatile alkali. Its main uses are in the manufacture of pulp and paper, alumina, soap and detergents, petroleum products and chemical production.
Description : Fats and oils:
Last Answer : Fats are soft and greasy at ordinary temperatures, whereas fixed oils—as distinct from essential oils and petroleum—are liquid.
Description : The process of neutralizing the fatty acids present in the oils or fats by adding sodium
Last Answer : hydroxide is called saponification.
Description : Mention the importance of fats and oils?
Last Answer : a) Fats and oils are sources of food in which vitamin A, D, E & K are soluble. b) It is also a source of light for tribal people. c) Eskimos use animal fat as a source of light in their igloos. d) It is also used as a source of heat.
Description : Mention the differences between fats and oils.
Last Answer : Fats Fats are mostly saturated Oils Oils are mostly unsaturated They are solids at room temperature They are liquids at room temperature They are chemically inactive They are chemically reactive They ... slowly It is easy to transport They are digested fast It is difficult to transport
Description : How are fats and oils formed?
Last Answer : When fatty acids react with glycerol, fats and oils are formed. Fatty acid + Glycerol Esterification Fat/oil + Water
Description : Write a note on fats and oils?
Last Answer : i) They are composed of carbon, hydrogen and fats. ii) A fat molecule has two parts glycerol and fatty acids. iii) The fatty acids are of two types: - a. Unsaturated fatty acids are ... double energy as compared to carbohydrates and proteins. vi) One gram fats release 9.1 Kilo Cal energy.
Description : Oils and fats are converted to soap in a process called (A) Hydrogenation (B) Esterification (C) Saponification (D) None of these
Last Answer : (C) Saponification
Description : The basic difference between vegetable oils and fats is in their (A) Density (B) Chemical properties (C) Physical state (D) Composition
Last Answer : (C) Physical state
Description : Pick out the wrong statement. (A) Pasteurisation of milk involves moderate heating followed by cooling (B) Bakeries and breweries make use of yeasts (C) Enzyme is a complex nitrogenous compound (D) Oils and fats are alkaloids
Last Answer : (D) Oils and fats are alkaloids
Description : Fats as compared to oils have (A) More unsaturated glycerides of fatty acids (B) Less unsaturated glycerides of fatty acids (C) Much higher reactivity to oxygen (D) Lower melting point
Last Answer : (B) Less unsaturated glycerides of fatty acids
Description : Vegetable oils and fats basically differ in their (A) Density ranges (B) Physical state (C) Chemical composition (D) Chemical properties
Last Answer : (B) Physical state
Description : Fats and oils contain ____ times more energy than proteins and carbohydrates. a. 2.25 c. 1.5 b. 2 d. 3
Last Answer : a. 2.25
Description : Neutral fats, oils and waxes may be classified as: a) lipids b) carbohydrates c) proteins d) none of the above
Last Answer : ANSWER: A -- LIPIDS
Last Answer : Cellulose