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

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

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

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

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

Preparation of ‘Dalda or Vanaspati’ ghee from vegetable oil utilizes the following process : (1) Hydrolysis (2)Oxidation (3) Hydrogenation (4) Ozonolysis

Description : Preparation of ‘Dalda or Vanaspati’ ghee from vegetable oil utilizes the following process : (1) Hydrolysis (2)Oxidation (3) Hydrogenation (4) Ozonolysis

Last Answer : Hydrogenation

Cooking oil can be converted into vegetable ghee by the process of – (1) oxidation (2) hydrogenation (3) distillation (4) crystalisation

Description : Cooking oil can be converted into vegetable ghee by the process of – (1) oxidation (2) hydrogenation (3) distillation (4) crystalisation

Last Answer : (2) hydrogenation Explanation: An example of an alkene addition reaction is a process called hydrogenation. In a hydrogenation reaction, two hydrogen atoms are added across the double bond of an alkene, resulting in a saturated alkane.

Cooking oil can be converted into vegetable ghee by the process of (1) oxidation (2) hydrogenation (3) distillation (4) crystalisation

Description : Cooking oil can be converted into vegetable ghee by the process of (1) oxidation (2) hydrogenation (3) distillation (4) crystalisation

Last Answer : (2) hydrogenation Explanation: An example of an alkene addition reaction is a process called hydrogenation. In a hydrogenation reaction, two hydrogen atoms are added across the double bond of an alkene, resulting in a saturated alkane.

Commercial production of Vanaspati is done by __________ of edible vegetable oils. (A) Hydrogenation (B) Oxidation (C) Hydrolysis (D) Hydrocracking

Description : Commercial production of Vanaspati is done by __________ of edible vegetable oils. (A) Hydrogenation (B) Oxidation (C) Hydrolysis (D) Hydrocracking

Last Answer : (A) Hydrogenation

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 concerned (C) All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms (D) Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content

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

Preparation of `Dalda or Vanaspati' ghee from vegetable oil utilizes the following process : (1) Hydrolysis (2) Qxidation (3) Hydrogenation (4) Ozonolysis

Description : Preparation of `Dalda or Vanaspati' ghee from vegetable oil utilizes the following process : (1) Hydrolysis (2) Qxidation (3) Hydrogenation (4) Ozonolysis

Last Answer : (3) Hydrogenation Explanation: The largest. scale application of hydrogenation is for the processing of vegetable oils (fats to give margarine and related spreads and shortenings). Typical vegetable oils ... liquid vegetable oils into solid or semi-solid fats, such as those present in margarine.

Cooking oil can be converted into vegetable ghee by the process of 1. hydrogenation 2. distillation 3. crystallisation 4. reduction The correct processes are: (a) 1 and 4 (b) 2 and 4 (c) 1 and 3 (d) 3 and 4

Description : Cooking oil can be converted into vegetable ghee by the process of 1. hydrogenation 2. distillation 3. crystallisation 4. reduction The correct processes are: (a) 1 and 4 (b) 2 and 4 (c) 1 and 3 (d) 3 and 4

Last Answer : Ans:(a)

Cooking oil can be converted into vegetables ghee by the process of – (1) Oxidation (2) Hydrogenation (3) Distillation (4) Crystallization

Description : Cooking oil can be converted into vegetables ghee by the process of – (1) Oxidation (2) Hydrogenation (3) Distillation (4) Crystallization

Last Answer : (2) Hydrogenation Explanation: Hydrogenation is a chemical reaction - widely used in the processing of cooking oils and fats - that turns unsaturated fatty acids into saturated ones.

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 tendency (B) Greater tendency of decomposition at elevated temperature (C) Hydrolysis tendency in presence of water (D) All (A), (B) and (C)

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)

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 : 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)

Last Answer : (D) All (A), (B) and (C)

Sulphuric acid is used as a catalyst in the (A) Hydrogenation of oils (B) Gas phase oxidation of SO2 in chamber process (C) Alkylation of hydrocarbons(D) None of these

Description : Sulphuric acid is used as a catalyst in the (A) Hydrogenation of oils (B) Gas phase oxidation of SO2 in chamber process (C) Alkylation of hydrocarbons (D) None of these

Last Answer : (C) Alkylation of hydrocarbons

An oil is converted into fat by its (A) Hydrogenation(B) Hydrolysis(C) Hydrocracking(D) Hydration

Description : An oil is converted into fat by its (A) Hydrogenation (B) Hydrolysis (C) Hydrocracking (D) Hydration

Last Answer : (A) Hydrogenation

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.

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

The metal that is used as a catalyst in the hydrogenation of oils is (a) Ni (b) Pb (c) Cu (d) Pt

Description : The metal that is used as a catalyst in the hydrogenation of oils is (a) Ni (b) Pb (c) Cu (d) Pt

Last Answer : Ans:(a)

The metal that is used as a catalyst in the hydrogenation of oils is - (1) Pb (2) Ni (3) Cu (4) Pt

Description : The metal that is used as a catalyst in the hydrogenation of oils is - (1) Pb (2) Ni (3) Cu (4) Pt

Last Answer : (2) Ni Explanation: The catalyst used in hydrogenation of oils is nickel. It is used to speed up the reaction.

The catalyst used in hydrogenation of oils is - (1) Fe (2) V2O5 (3) Ni (4) O2

Description : The catalyst used in hydrogenation of oils is - (1) Fe (2) V2O5 (3) Ni (4) O2

Last Answer : (3) Ni Explanation: The catalyst used in hydrogenation of oils is nickel. It is used to speed up the reaction. Vegetable oils convert into vanaspati after hydrogenation.

The metal that is used as a catalyst in the hydrogenation of oils is?

Description : The metal that is used as a catalyst in the hydrogenation of oils is?

Last Answer : Ni

For the hydrogenation of oils, __________ (i) __________ is commonly used as catalyst and __________ (ii) __________ is a catalyst poison. (A) (i) platinum (ii) sulphur (B) (i) palladium (ii) oxygen (C) (i) nickel (ii) sulphur (D) (i) nickel (ii) oxygen

Description : For the hydrogenation of oils, __________ (i) __________ is commonly used as catalyst and __________ (ii) __________ is a catalyst poison. (A) (i) platinum (ii) sulphur (B) (i) palladium (ii) oxygen (C) (i) nickel (ii) sulphur (D) (i) nickel (ii) oxygen

Last Answer : (C) (i) nickel (ii) sulphur

Hydrogenation of vegetable oils is a/an __________ reaction. (A) Endothermic (B) Autocatalytic (C) Exothermic (D) Homogenous

Description : Hydrogenation of vegetable oils is a/an __________ reaction. (A) Endothermic (B) Autocatalytic (C) Exothermic (D) Homogenous

Last Answer : (C) Exothermic

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

Which of the following statements are false about benzene? (a) It is a planar molecule with bond angles 120°(b) It is immiscible with water forming the lower layer. (c) It can be converted into cyclohexane by hydrogenation at 200°C in the presence of Ni catalyst. (d) It reacts with ethyl chloride in the presence of aluminium chloride to form ethylbenzene..

Description : Which of the following statements are false about benzene? (a) It is a planar molecule with bond angles 120°. (b) It is immiscible with water forming the lower layer. (c) It can be ... Ni catalyst. (d) It reacts with ethyl chloride in the presence of aluminium chloride to form ethylbenzene.

Last Answer : It is immiscible with water forming the lower layer

Vegetable oil is made into margarine through: w) halogenation x) partial hydrogenation y) methylation z) oxidation

Description : Vegetable oil is made into margarine through: w) halogenation x) partial hydrogenation y) methylation z) oxidation

Last Answer : ANSWER: X -- PARTIAL HYDROGENATION

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.

Hydrogenation of oil/fat does not (A) Improve its resistance to rancid oxidation (B) Raise its melting point (C) Remove double bonds (D) None of these

Description : Hydrogenation of oil/fat does not (A) Improve its resistance to rancid oxidation (B) Raise its melting point (C) Remove double bonds (D) None of these

Last Answer : (D) None of these

In mammals other than higher primates uric acid is converted by (A) Oxidation to allantoin (B) Reduction to ammonia (C) Hydrolysis to ammonia (D) Hydrolysis to allantoin

Description : In mammals other than higher primates uric acid is converted by (A) Oxidation to allantoin (B) Reduction to ammonia (C) Hydrolysis to ammonia (D) Hydrolysis to allantoin

Last Answer : Answer : A

Catalyst used during the manufacture of 'Vanaspati Ghee' is (A) Zinc (B) Nickel (C) Platinum (D) Copper

Description : Catalyst used during the manufacture of 'Vanaspati Ghee' is (A) Zinc (B) Nickel (C) Platinum (D) Copper

Last Answer : (B) Nickel

What is meant by hydrogenation of oils?

Description : What is meant by hydrogenation of oils?

Last Answer : The process of converting liquid oils into solids saturated fats by passing hydrogen gas through them is called hydrogenation of oils. Finely divided nickel is used as catalyst during the process. Ex: Vanaspathi

A 'unit process' is exemplified by the (A) Distillation (B) Hydrogenation of oils (C) Absorption (D) Humidification

Description : A 'unit process' is exemplified by the (A) Distillation (B) Hydrogenation of oils (C) Absorption (D) Humidification

Last Answer : (B) Hydrogenation of oils

Alcohol is produced by the (A) Oxidation of an aldehyde (B) Hydrolysis of an ether (C) Esterification of a fat (D) None of these

Description : Alcohol is produced by the (A) Oxidation of an aldehyde (B) Hydrolysis of an ether (C) Esterification of a fat (D) None of these

Last Answer : (B) Hydrolysis of an ether

Which gas is used in the manufacture of vegetable ghee? -General Knowledge

Description : Which gas is used in the manufacture of vegetable ghee? -General Knowledge

Last Answer : answer:

A healthy person eats the following diet-5 gm raw sugar, 4 gm albumin, 10 gm pure buffalo ghee adultrated with 2 gm vegetable ghee (hydrogenated vegetable oil) and 5 gm lignin. How many calories he is likely to get? (a) 126 (b) 164 (c) 112 (d) 144

Description : A healthy person eats the following diet-5 gm raw sugar, 4 gm albumin, 10 gm pure buffalo ghee adultrated with 2 gm vegetable ghee (hydrogenated vegetable oil) and 5 gm lignin. How many calories he is likely to get? (a) 126 (b) 164 (c) 112 (d) 144

Last Answer : (d) 144

In the Industrial production of vegetable ghee, the process involved is

Description : In the Industrial production of vegetable ghee, the process involved is

Last Answer : Reduction

Gas used in the production of vegetable ghee is

Description : Gas used in the production of vegetable ghee is

Last Answer : Hydrogen

The thermal decomposition of alkanes in the absence of air is called : (a) Combustion (b) Oxidation (c) Cracking (d) Hydrogenation

Description : The thermal decomposition of alkanes in the absence of air is called : (a) Combustion (b) Oxidation (c) Cracking (d) Hydrogenation

Last Answer : Cracking

Which one of the following is not a metal catalyst for the hydrogenation of an alkene? (a) Pd (b) Pt (c) Na(d) Ni

Description : Which one of the following is not a metal catalyst for the hydrogenation of an alkene? (a) Pd (b) Pt (c) Na (d) Ni

Last Answer : Na

2-Butyne undergoes catalytic hydrogenation in the presence of Lindlar's catalyst to give (a) 2-Butene (b) Butane (c) 1-Butene (d) 2-Methylpropene

Description : 2-Butyne undergoes catalytic hydrogenation in the presence of Lindlar's catalyst to give (a) 2-Butene (b) Butane (c) 1-Butene (d) 2-Methylpropene

Last Answer : 2-Butene

Catalyst used in the hydrogenation of oil is (A) Nickel (B) Platinum (C) Iron (D) Alumina

Description : Catalyst used in the hydrogenation of oil is (A) Nickel (B) Platinum (C) Iron (D) Alumina

Last Answer : (A) Nickel

Nickel is not used as a catalyst in the __________ reaction. (A) Shift conversion (B) Oil hydrogenation (C) Steaming reforming of naphtha (D) Ammonia cracking/dissociation

Description : Nickel is not used as a catalyst in the __________ reaction. (A) Shift conversion (B) Oil hydrogenation (C) Steaming reforming of naphtha (D) Ammonia cracking/dissociation

Last Answer : (A) Shift conversion

Nickel is not used as a catalyst in the (A) Fischer-Tropsch process (B) Shift conversion (C) Hydrogenation of oil (D) Ostwald's process of HNO3 manufacture

Description : Nickel is not used as a catalyst in the (A) Fischer-Tropsch process (B) Shift conversion (C) Hydrogenation of oil (D) Ostwald's process of HNO3 manufacture

Last Answer : (D) Ostwald's process of HNO3 manufacture

Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in (A) Pyrolysis of oil(B) Sintering of porous catalyst(C) Hydrogen embrittlement(D) All (A), (B) and (C)

Description : Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in (A) Pyrolysis of oil (B) Sintering of porous catalyst (C) Hydrogen embrittlement (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Zeolite is used in the (A) Water treatment (B) Glass manufacture (C) Hydrogenation of fatty oil as a catalyst (D) Development of exposed photographic plate

Description : Zeolite is used in the (A) Water treatment (B) Glass manufacture (C) Hydrogenation of fatty oil as a catalyst (D) Development of exposed photographic plate

Last Answer : (A) Water treatment

A mixture of chlorine & sodium bromide acts as a/an (A) Insecticides (B) Analgesic drug (C) Fire retardant (D) Hydrogenation catalyst

Description : A mixture of chlorine & sodium bromide acts as a/an (A) Insecticides (B) Analgesic drug (C) Fire retardant (D) Hydrogenation catalyst

Last Answer : (C) Fire retardant

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.

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 hydrocarbons are converted to low molecular weight gaseous hydrocarbons by a process known as (a) hydrogenation (b) reforming (c) cracking (d) reduction

Description : Liquid hydrocarbons are converted to low molecular weight gaseous hydrocarbons by a process known as (a) hydrogenation (b) reforming (c) cracking (d) reduction

Last Answer : Ans:(c)

Genetic engineering has been successfully used for producing (a) transgenic mice for testing safety of polio vaccine before use in humans (b) transgenic models for studying new treatments for certain cardiac diseases (c) transgenic cow-Rosie which produces high fat milk for making ghee (d) animals like bulls for farm work as they have super power

Description : Genetic engineering has been successfully used for producing (a) transgenic mice for testing safety of polio vaccine before use in humans (b) transgenic models for studying new treatments for certain cardiac ... milk for making ghee (d) animals like bulls for farm work as they have super power

Last Answer : (a) transgenic mice for testing safety of polio vaccine before use in humans

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)