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
Description : Ethyl alcohol cannot be produced (A) From waste sulphite substrate of paper mills (B) By Esterification and hydrolysis of ethylene (C) From molasses (D) None of these
Last Answer : (D) None of these
Description : Basic-hydrolysis of esters is called (a) Acetylation (b) Acidification (c) Esterification (d) Saponification
Last Answer : Saponification
Description : The hydrolysis of a fat using a solution of a strong hydroxide is called: w) neutralization x) esterification y) saponification z) condensation
Last Answer : ANSWER: Y -- SAPONIFICATION
Description : Saponification: (A) Hydrolysis of fats by alkali (B) Hydrolysis of glycerol by liposes (C) Esterification (D) Reduction
Last Answer : Answer : A
Description : Setting of plaster of Paris is accompanied with (A) Hydration (B) Dehydration (C) Hydrolysis (D) Loss of CO2
Last Answer : (A) Hydration
Description : An oil is converted into fat by its (A) Hydrogenation (B) Hydrolysis (C) Hydrocracking (D) Hydration
Last Answer : (A) Hydrogenation
Description : The setting and hardening of cement after addition of water is due to a) Binding action of water b) Evaporation of water c) Hydration and hydrolysis of some constituent compounds of cement* d) Additional hardening compounds added to cement
Last Answer : c) Hydration and hydrolysis of some constituent compounds of cement*
Description : Inversion of cane sugar is an example of (A) Unimolecular reaction with first order (B) Bimolecular reaction with second order (C) Bimolecular reaction with first order (D) Unimolecular reaction with second order
Last Answer : (C) Bimolecular reaction with first order
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 : Reaction of an alcohol with organic acid is called the __________ reaction. (A) Saponification (B) Esterification (C) Neutralisation (D) Acidification
Last Answer : (B) Esterification
Description : Esterification reaction (A) Produces soap (B) Is reversible (C) Is a reaction between an alcohol and an organic acid (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Esterification reaction produces (A) Detergent (B) Vanaspati (C) Soap (D) Mercaptans
Last Answer : (C) Soap
Description : The glycerol for fatty acid esterification in adipocytes is (A) For the most part, derived from glucose (B) Obtained primarily from phosphorylation of glycerol by glycerol kinase (C) Formed from gluconeogenesis (D) Formed from glycogenolysis ENZYMES 153
Description : Which of the following regulates lipolysis in adipocytes? (A) Activation of fatty acid synthesis mediated by CAMP (B) Glycerol phosphorylation to prevent futile esterification of fatty acids (C) ... result of hormone stimulated increases in CAMP levels (D) Activation of CAMP production by Insulin
Last Answer : Answer : C
Description : Esterification of cholesterol occurs mainly in (A) Adipose tissue (B) Liver (C) Muscles (D) Kidneys
Last Answer : Answer : B
Description : Alcoholic OH) group can be identified by : (1) Tolien's Reagent Test (2) Esterification Test (3) FeCl3 Test (4) Ozonolysis Reaction
Last Answer : (3) FeCl3 Test Explanation: As phenol is an aromatic alcohol, so FeCl3 test is a test for alcohol and esterificaton test is also a test for alcohol. The ferric chloride test is used to determine the presence or absence of phenols in a given sample (for instance natural phenols in a plant extract).
Description : What is trans esterification?
Last Answer : Trans esterification is the process of conversion of crude oil obtained from seeds of plant into commercially useful fuel.
Description : Which of the following conditions will drive the equilibrium of the Fischer esterification towards ester formation? (a) addition of water (b) removal of water as it is formed (c) addition of alcohol (d) both (b) and (c)
Last Answer : both (b) and (c)
Description : Explain following unit processes with suitable example. (i) Sulphonation (ii) Hydrogenation (iii) Esterification
Last Answer : (i) Sulfonation reactions : It is the reaction with sulfuric acid to introduce sulfonic (SO3H) group into a compound. (ii) Hydrogenation: Hydrogenation may be defined as the chemical ... of ethyl acetate. Sulphuric acid and hydrochloric acids are the catalysts used for esterification.
Description : When an aldehyde is heated with Fehling's solution, the aldehyde undergoes one of the following processes. Does it undergo: w) neutralization x) oxidation y) reduction z) esterification
Last Answer : ANSWER: X -- OXIDATION
Description : Alcoholic (– OH) group can be identified by : (1) Tollen's Reagent Test (2) Esterification Test (3) FeCl3 Test (4) Ozonolysis Reaction
Last Answer : FeCl3 Test
Description : The sugar that yields only glucose on hydrolysis is (a) Lactose (b) Sucrose (c) Maltose (d) Fructose
Last Answer : Maltose
Description : The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called __________ temperature. (A) Boyle (B) Inversion (C) Critical (D) Reduced
Last Answer : (A) Boyle
Description : The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is called the __________ temperature. (A) Critical (B) Boyle (C) Inversion (D) Reduced
Last Answer : (B) Boyle
Description : Inversion of sucrose produces (A) Fructose (B) Glucose (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (B) Glucose
Description : The Joule-Thomson co-efficient is defined as (∂T/∂P)H. Its value at the inversion point is (A) ∞ (B) 1 (C) 0 (D) -ve
Last Answer : (C) 0
Description : All gases above its inversion temperature, in a throttling process will show (A) A heating effect (B) No change in temperature (C) A cooling effect (D) Either (A) or (C)
Last Answer : (A) A heating effect
Description : Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature. (A) Below (B) At (C) Above (D) Either 'b' or 'c'
Last Answer : A) Below
Description : Joule-Thomson Co-efficient at any point on the inversion curve is (A) ∞ (B) +ve (C) 0 (D) -ve
Description : Joule-Thomson co-efficient which is defined as, η = (∂T/∂P)H = 1/Cp (∂H/∂T)P, changes sign at a temperature known as inversion temperature. The value of Joule-Thomson co-efficient at inversion temperature is (A) 0 (B) ∞ (C) +ve (D) -ve
Last Answer : (A) 0
Description : Which one is true for a throttling process? (A) A gas may have more than one inversion temperatures (B) The inversion temperature is different for different gases (C) The inversion ... gases (D) The inversion temperature is the temperature at which Joule-Thomson co-efficient is infinity
Last Answer : (B) The inversion temperature is different for different gases
Description : The temperature at which ferromagnetic material can no longer be magnetised by the outside forces, is termed as the (A) Critical point (B) Curie temperature (C) Inversion temperature (D) Eutectic temperature
Last Answer : (B) Curie temperature
Description : Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of (A) Rubber lined mild steel (B) Lead lined mild steel (C) Aluminium (D) Cast iron
Last Answer : (A) Rubber lined mild steel
Description : Atmospheric corrosion of metals result from their (A) Slow oxidation (B) Fast oxidation (C) Fast hydration (D) Slow dehydration
Last Answer : (A) Slow oxidation
Description : Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre. (A) Cutting (B) Fibrillation (C) Hydration (D) Strengthening
Last Answer : (D) Strengthening
Description : Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of (A) Final rolling out of paper (B) Cutting of fibres (C) Hydration of fibres (D) Fibrillation of fibre
Last Answer : (A) Final rolling out of paper
Description : Cement setting under water employs a/an __________ process. (A) Hydration (B) Decomposition (C) Oxidation (D) Reduction
Description : __________ of quicklime produces slaked lime. (A) Hydration (B) Dehydration (C) Hydrogenation (D) None of these
Description : Atmospheric temperature increasing at the higher altitudes is called – (1) Radiation (2) Inversion (3) Conduction (4) Convection
Last Answer : (2) Inversion Explanation: The reversal of the normal behaviour of temperature in the troposphere in which a layer of cool air at the surface is overlain by a layer of warmer ... as temperature inversion. Inversions play an important role in determining cloud forms, precipitation, and visibility.
Description : The movement of a gene from one linkage group to another is called (a) translocation (b) crossing over (c) inversion (d) duplication
Last Answer : (c) inversion
Description : The mechanism that causes a gene to move from one linkage group to another is called (a) inversion (b) duplication (c) translocation (d) crossing-over.
Last Answer : (c) translocation
Description : Irreversible precipitation of proteins caused by heating is called : (a) Polymerisation (b) Denaturation (c) Electrophoresis (d) Inversion
Last Answer : Denaturation
Description : The movement of soil across a tool surface without sticking is called as a. Pulverisation b. Inversion c. Scouring d. Turning
Last Answer : c. Scouring
Description : Atmospheric temperature increasing at the higher altitudes is called (1) Radiation (2) Inversion (3) Conduction (4) Convection
Last Answer : Inversion
Description : Can you get stuck upside down on an inversion table?
Last Answer : Yes
Description : How to reduce effect of temperature inversion?
Last Answer : Welcome to fluther. This sounds like a homework question and we don’t answer them here but we’ll point you in a direction to look. Are you talking gas, fluid, or solid?
Description : What is Inversion ?
Last Answer : The position of the verb in front of the subject is called inversion , which is the opposite of the general order of a sentence.
Description : After thermal inversion, pollutants pile up in
Last Answer : After thermal inversion, pollutants pile up in A. Hanging cool air B. Hanging warm air C. At the boundary of cool and warm airs D. Soil
Description : In thermal inversion.
Last Answer : In thermal inversion. A. Warm ground air gets overlapped by cool air B. Cool ground air gets ... winter D. Ground temperature becomes low in summer.