Which one of the following forms the base of vegetable fibres? (1) Cellulose (2) Proteins (3) Fats (4) Oils

Which one of the following forms the base of vegetable fibres? (1) Cellulose (2) Proteins (3) Fats (4) Oils
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(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 referred to as cellulosic or lignocellulosic. Examples include cotton, hemp, jute, flax, ramie, sisal, bagasse, and banana. Vegetable fibers are usually stiffer but less tough than synthetic fibers.
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Which one of the following forms the base of vegetable fibres? (1) Cellulose (2) Proteins (3) Fats (4) Oils

Description : Which one of the following forms the base of vegetable fibres? (1) Cellulose (2) Proteins (3) Fats (4) Oils

Last Answer : Cellulose

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 are mostly triglycerides. 4. The size of an atom is of the order of 10 - 15 m. The correct statements are: (a) 1, 2 and 4 only (b) 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only

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)

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 obtained from (a) Animal sources (b) Vegetable sources (c) Synthesis (d) Both animal and vegetable sources

Last Answer : Ans:(d)

Which gas is used for converting vegetable oils into saturated fats? (1) H2 (2) O2 (3) Cl2 (4) SO2

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).

The basic difference between vegetable oils and fats is in their (A) Density (B) Chemical properties (C) Physical state (D) Composition

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

Vegetable oils and fats basically differ in their (A) Density ranges (B) Physical state (C) Chemical composition (D) Chemical properties

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

Glycerine and what other substance are made by heatin animal fats or vegetable oils with sodium hydroxide?

Description : Glycerine and what other substance are made by heatin animal fats or vegetable oils with sodium hydroxide?

Last Answer : ANSWER: SOAP

Which gas is used for converting vegetable oils into saturated fats ? (1) H2 (2) O2 (3) Cl2 (4) SO2

Description : Which gas is used for converting vegetable oils into saturated fats ? (1) H2 (2) O2 (3) Cl2 (4) SO2

Last Answer : H2

Drying oils contain a fairly large proportion of – (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids

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.

Fats and oils contain ____ times more energy than proteins and carbohydrates. a. 2.25 c. 1.5 b. 2 d. 3

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

Neutral fats, oils and waxes may be classified as: a) lipids b) carbohydrates c) proteins d) none of the above

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

Drying oils contain a fairly large proportion of (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids

Description : Drying oils contain a fairly large proportion of (1) fats (2) proteins (3) saturated fatty acids (4) unsaturated fatty acids

Last Answer : unsaturated fatty acids

Fiber diet includes – (1) glycogen (2) proteins (3) cellulose (4) fats

Description : Fiber diet includes – (1) glycogen (2) proteins (3) cellulose (4) fats

Last Answer : (3) cellulose Explanation: The components of dietary fiber include cellulose, lignin (only non-carbohydrate component of dietary fiber), pectin, chitan, etc. Such fibers increase fecal bulk and speed up the passage of food through the digestive tract.

Fiber diet includes : (1) glycogen (2) proteins (3) cellulose (4) fats

Description : Fiber diet includes : (1) glycogen (2) proteins (3) cellulose (4) fats

Last Answer : cellulose

The saliva helps in the digestion of – (1) Proteins (2) Starch (3) Fibres (4) Fats

Description : The saliva helps in the digestion of – (1) Proteins (2) Starch (3) Fibres (4) Fats

Last Answer : (2) Starch Explanation: Amylase enzymes secreted in saliva help break down starches into simpler sugar molecules that can be absorbed into the bloodstream. In this way, amylase activity influences blood glucose levels, which need to be maintained within an optimal range for good health.

The saliva helps in the digestion of (1) Proteins (2) Starch (3) Fibres (4) Fats

Description : The saliva helps in the digestion of (1) Proteins (2) Starch (3) Fibres (4) Fats

Last Answer : Starch

Dietary fibres are rich in (A) Cellulose (B) Glycogen (C) Starch (D) Proteoglycans

Description : Dietary fibres are rich in (A) Cellulose (B) Glycogen (C) Starch (D) Proteoglycans

Last Answer : Answer : A

Cellulose is the main constituent of most __________ fibres. (A) Acrylic (B) Spandex (C) Synthetic (D) Natural

Description : Cellulose is the main constituent of most __________ fibres. (A) Acrylic (B) Spandex (C) Synthetic (D) Natural

Last Answer : (D) Natura

Pick out the wrong statement. (A) Denier is defined as weight in gm of 9000 metres length of a fibre, while tex is defined as weight in gm of 1000 metres length of fibre (B) Crimp is a measure of the difference between the length of the straightened and unstraightened fibre (C) Dacron fibres, acrylic fibres, viscose rayon fibres & cellulose acetate fibres are all prepared by wet spinning (D) Nylon fibres have greater water absorption capacity than polyester fibres

Description : Pick out the wrong statement. (A) Denier is defined as weight in gm of 9000 metres length of a fibre, while tex is defined as weight in gm of 1000 metres length of fibre (B) ... fibres are all prepared by wet spinning (D) Nylon fibres have greater water absorption capacity than polyester fibres

Last Answer : (C) Dacron fibres, acrylic fibres, viscose rayon fibres & cellulose acetate fibres are all prepared by wet spinning

The synthetic fibres produced from __________ are known as rayon. (A) Lignin (B) Cellulose (C) Polyamides (D) Ethylene glyco

Description : The synthetic fibres produced from __________ are known as rayon. (A) Lignin (B) Cellulose (C) Polyamides (D) Ethylene glyco

Last Answer : (B) Cellulose

Identify the group in which all the polymers mentioned can be used to make fibres. (A) Butadiene copolymers, Polyamides, Urea-formaldehyde (B) Cellulose derivatives, Polyisoprene, Polyethylene (C) Cellulose derivatives, Polyamides, Polyurethane (D) Polypropylene, Poly vinyl chloride, Silicon

Description : Identify the group in which all the polymers mentioned can be used to make fibres. (A) Butadiene copolymers, Polyamides, Urea-formaldehyde (B) Cellulose derivatives, Polyisoprene, Polyethylene (C) Cellulose derivatives, Polyamides, Polyurethane (D) Polypropylene, Poly vinyl chloride, Silicon

Last Answer : (B) Cellulose derivatives, Polyisoprene, Polyethylene

Which of the following statements is false about cellulose? (a) It is a polymer of glucose molecules joined in β-1,4 linkages. (b) It is a major component of cotton. (c) It is used in the manufacture of Dacron fibres. (d) It is used in the manufacture of Rayon fibres

Description : Which of the following statements is false about cellulose? (a) It is a polymer of glucose molecules joined in β-1,4 linkages. (b) It is a major component of cotton. (c) It is used in the manufacture of Dacron fibres. (d) It is used in the manufacture of Rayon fibres

Last Answer : It is used in the manufacture of Dacron fibres.

What is the indicator for fats oils and waxes?

Description : What is the indicator for fats oils and waxes?

Last Answer : Need answer

What compound make up fats and oils?

Description : What compound make up fats and oils?

Last Answer : Need answer

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

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)

The main cause of rancidity in of fats and foods is the oils - (1) hydrolysis (2) oxidation (3) clarification (4) reduction

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.

Saponification involves the hydrolysis of fats and oils by- (1) water (2) washing soda (3) stearic acid (4) caustic soda

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.

Chemically fats and oils are: (1) Triesters (2) Amines (3) Aldehydes (4) Ketons

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.

Fats and oils:

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.

The process of neutralizing the fatty acids present in the oils or fats by adding sodium

Description : The process of neutralizing the fatty acids present in the oils or fats by adding sodium

Last Answer : hydroxide is called saponification.

Mention the importance of fats and oils?

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.

Mention the differences between fats and oils.

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

How are fats and oils formed?

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

Write a note on fats and oils?

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. 

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 called oils. (c) When hydrolyzed, they produce glycerol and carboxylate salts. (d) Triacylglycerols with low melting points are composed of saturated fatty acids, causing them to be liquids at room temperature

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

Which of the following compounds will not be classified as lipids? (a) Fats (b) Waxes (c) Soaps (d) Oils

Description : Which of the following compounds will not be classified as lipids? (a) Fats (b) Waxes (c) Soaps (d) Oils

Last Answer : Waxes

Alkaline hydrolysis of oils (or fats) is called : (a) Saponification (b) Fermentation (c) Diazotization (d) Rancidification

Description : Alkaline hydrolysis of oils (or fats) is called : (a) Saponification (b) Fermentation (c) Diazotization (d) Rancidification

Last Answer : Saponification

Liquid oils can be converted to solid fats by (a) Hydrogenation (b) Saponification (c) Hydrolysis (d) Oxidation of double bonds

Description : Liquid oils can be converted to solid fats by (a) Hydrogenation (b) Saponification (c) Hydrolysis (d) Oxidation of double bonds

Last Answer : Hydrogenation

Fats and oils are (a) monoesters of glycerol (b) diesters of glycerol (c) triesters of glycerol (d) diesters of glycol

Description : Fats and oils are (a) monoesters of glycerol (b) diesters of glycerol (c) triesters of glycerol (d) diesters of glycol

Last Answer : triesters of glycerol

Oils and fats are converted to soap in a process called (A) Hydrogenation (B) Esterification (C) Saponification (D) None of these

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

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

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

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

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

One of the following is NOT a lipid. Is it: w) fats and oils x) starches y) steroids z) waxes

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

What vegetable oils are considered to be cholesterol lowering?

Description : What vegetable oils are considered to be cholesterol lowering?

Last Answer : Most vegetable oils are made up of 100% fat and are not good for lowering cholesterol. Some healthy alternatives include sesame oil, sunflower oil, safflower oil, and extra virgin olive oil for cooking.

The Iodine number of essential fatty acids of vegetable oils: (A) High (B) Very high (C) Very low (D) Low

Description : The Iodine number of essential fatty acids of vegetable oils: (A) High (B) Very high (C) Very low (D) Low

Last Answer : Answer : D

A fractionating column is a glass apparatus used to (a) Separate magnetic solids from nonmagnetic solids (b) Separate a mixture in water (c) Separate two or more liquids (d) Extract oils from vegetable matter

Description : A fractionating column is a glass apparatus used to (a) Separate magnetic solids from nonmagnetic solids (b) Separate a mixture in water (c) Separate two or more liquids (d) Extract oils from vegetable matter

Last Answer : Ans:(c)

Vegetable oils are converted into solid fat (ghee) by - (1) Hydrolysis (2) Addition of agar (3) Oxidation using air and a catalyst (4) Hydrogenation

Description : Vegetable oils are converted into solid fat (ghee) by - (1) Hydrolysis (2) Addition of agar (3) Oxidation using air and a catalyst (4) Hydrogenation

Last Answer : (4) Hydrogenation 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 ... oils are derived from polyunsaturated fatty acids (containing more than one carbon-carbon double bonds).

Which one of the following vegetable oils is used in the manufacture of paints? (1) Palm oil (2) Sunflower oil (3) Linseed oil (4) Cottonseed oil

Description : Which one of the following vegetable oils is used in the manufacture of paints? (1) Palm oil (2) Sunflower oil (3) Linseed oil (4) Cottonseed oil

Last Answer : (4) Cottonseed oil Explanation: Linseed oil and castor oils are used mainly as drying agents in paints and varnishes. Linseed oil is generally used in the manufacture of oil paints, drying oil finish ... , as a pigment binder in oil paints, as a plasticizer and in the manufacture of linoleum.

Which of the following vegetable oils does not contain essential fatty acids? (1) Sunflower oil (2) Mustard oil (3) Coconut oil (4) Gmundnut oil

Description : Which of the following vegetable oils does not contain essential fatty acids? (1) Sunflower oil (2) Mustard oil (3) Coconut oil (4) Gmundnut oil

Last Answer : (1) Sunflower oil Explanation: Fatty Acids are aliphatic carboxylic acid with varying hydrocarbon lengths at one end of the chain joined to terminal carboxyl (-COOH) group at the other end.

Feedstock for the production of biodiesel is (A) Herbal plants (B) Used vegetable oils (C) LSHS (D) Bagasse

Description : Feedstock for the production of biodiesel is (A) Herbal plants (B) Used vegetable oils (C) LSHS (D) Bagasse

Last Answer : (B) Used vegetable oils