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.
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.
Description : Which of the following vegetable oils does not contain essential fatty acids ? (1) Sunflower oil (2) Mustard oil (3) Coconut oil (4)Groundnut oil
Last Answer : Sunflower oil
Description : The commonly used drying oil for oil paints, is (A) Olive oil (B) Linseed oil (C) Kerosene oil (D) Acetate of lead
Last Answer : Answer: Option D
Description : Linseed oil is used in paints as (A) Thinner (B) Vehicle (C) Base (D) Drier
Description : The vehicle used in case of enamel paints is usually (A) Linseed oil (B) Water (C) Varnish (D) None of these
Last Answer : Answer: Option C
Description : Linseed oil is used in Paints as a a) Vehicle b) Base c) Drier* d) Thinner
Last Answer : c) Drier*
Description : The oilseed which is not edible - (1) Sunflower (2) Cottonseed (3) Sesamurn (4) Groundnut
Last Answer : (2) Cottonseed Explanation: Cottonseed is a non-edible oilseed. Gossypol is a. toxic compound found in the cotton plant. This compound is concentrated in the cottonseed but can also be found in other parts of the plant such as hulls, leaves and stems. Gossypol affects mainly the heart and liver.
Description : The oilseed which is not edible (1) Sunflower (2) Cottonseed (3) Sesamum (4) Groundnut
Last Answer : Cottonseed
Description : Oils having more than 50 % polyunsaturated fatty acids include all of the following except (A) Groundnut oil (B) Soyabean oil (C) Sunflower oil (D) Safflower oil
Last Answer : Answer : A
Description : Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its (A) Poor oxidation stability and high gum forming ... at elevated temperature (C) Hydrolysis tendency in presence of water (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : High cholesterol patients are advised to use (a) ghee, butter and oils (b) groundnut oil, margarine and vegetable oils (c) fatty oil and butter (d) cheese, dalda and ghee.
Last Answer : (b) groundnut oil, margarine and vegetable oils
Description : Pick out the correct statement. (A) A fat is converted into oil by its hydrogenation (B) There is no difference between a fat and an oil so far as its physical properties are ... Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content
Last Answer : (C) All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms
Description : Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil. (A) Drying (B) Semi-drying (C) Non-drying (D) None of these
Last Answer : (C) Non-drying
Description : Which gas is used to manufacture vanaspati from vegetable oil is - (1) carbon dioxide (2) nitrogen (3) oxygen (4) hydrogen
Last Answer : (4) hydrogen Explanation: Hydrogen is used to manufacture vanaspati from vegetable oil.
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 : Partial hydrogenation of vegetable oils in the presence of Ni catalyst at 200°C gives (a) Vanaspati ghee (b) Margarine (c) Both of these (d) None of these
Last Answer : Vanaspati ghee
Description : Glycerine and what other substance are made by heatin animal fats or vegetable oils with sodium hydroxide?
Last Answer : ANSWER: SOAP
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 gas used in the manufacture of vanaspati from vegetable oil is?
Last Answer : hydrogen
Description : Glyptal used in the manufacture of paints & lacquers is a __________ polymer. (A) Polyamide (B) Polystyrene (C) Polyester (D) Polyacrylonitril
Last Answer : (C) Polyester
Description : Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of (A) Bronze (B) Stainless steel (C) Flint or porcelain (D) Concrete
Last Answer : (C) Flint or porcelain
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.
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
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 : 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)
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 : 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).
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
Description : An example of elution is (A) Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank (B) Separation of sugar from sugar beet by hot water (C) Dissolution of tannin out of tree barks by water (D) Recovery of vegetable oils from seeds
Last Answer : (A) Separation of uranium oxide from its ore by H2SO4 in a Pachuca tank
Description : Whether cholesterol is present in vegetable oils?
Last Answer : No.
Description : Which acid is contained in vegetable oils?
Last Answer : Stearic acid
Description : Name two vegetable oils which are used as medicine:?
Last Answer : Caster oil; Mustard oil
Description : Vegetable oils are hydrogenated in a __________ reactor. (A) Slurry (B) Plug flow (C) Homogeneous catalytic (D) None of these
Last Answer : (A) Slurry
Description : Flash point of most vegetable oils is about __________ °C. (A) 50 (B) 100 (C) 200 (D) 300
Last Answer : (C) 200
Description : Hydrogenation of vegetable oils is a/an __________ reaction. (A) Endothermic (B) Autocatalytic (C) Exothermic (D) Homogenous
Last Answer : (C) Exothermic
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 : 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 : Hydrogenation of edible vegetable oils (A) Is an exothermic reaction (B) Increases their melting point (C) Is done in presence of nickel catalyst (D) All (A), (B) and (C)
Description : The basic constituent of vegetable oils is (A) Triglyceride (B) Fatty acids (C) Fatty alcohol (D) Mono esters
Last Answer : (A) Triglyceride
Description : Commercial production of Vanaspati is done by __________ of edible vegetable oils. (A) Hydrogenation (B) Oxidation (C) Hydrolysis (D) Hydrocracking
Last Answer : (A) Hydrogenation
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
Last Answer : Cellulose
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 : Hydrogenation
Description : Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils (A) Cause cholesterol build up and blood clotting (B) Are prone to rancid oxidation (C ... (as their complete removal is very difficult) (D) Have affinity to retain harmful sulphur compounds
Last Answer : (A) Cause cholesterol build up and blood clotting
Description : What is the role of purified linseed oil in oil painting?
Last Answer : It makes the paint flow better. It’s the equivalent of using water with watercolors or acrylics.
Description : The edible oil commonly used in India for preparation of toilet soap is (a) Linseed oil (b) Mustard oil (c) Soyabean oil (d) Coconut oil
Last Answer : Ans: (d)
Description : ’Drying oil’, oxidized spontaneously by atmospheric oxygen at ordinary temperature and forms a hard water proof material is (A) Coconut oil (B) Peanut oil (C) Rape seed oil (D) Linseed oil
Description : The linolinic acid present in linseed oil
Last Answer : Ans.50-60%