What is the reaction mechanism in fehling's test?

1 Answer

Answer :

Feel Free to Answer

Related questions

Description : The reagent used to test the presence of starch in leaves is – (1) Fehling's solution (2) Iodine solution (3) Million's reagent (4) Benedict's solution

Last Answer : (2) Iodine solution Explanation: The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black color.

Description : The colour observed when hydrochloric acid and Fehling’s solution is added to test sugar

Last Answer : is reddish.

Description : The chemical added to test the presence of sugar are hydrochloric acid and Fehling’s

Last Answer : solution.

Description : Which of the following statements is NOT correct : (a) Tollens' test is given by both aliphatic and aromatic aldehydes. (b) Fehling's test is given by aliphatic aldehydes. It is not given ... given by methyl ketones and acetaldehydes. (d) Lucas test is given by both aliphatic and aromatic aldehydes

Last Answer : Lucas test is given by both aliphatic and aromatic aldehydes

Description : A reducing sugar will (a) react with Fehling's test (b) not react with Fehling's test (c) have fewer calories (d) always be a ketone

Last Answer : react with Fehling's test

Description : Which of the following compounds will give a positive test with Fehling's solution? (a) Formaldehyde (b) Acetone (c) Ethyl acetate (d) Acetic acid

Last Answer : Formaldehyde

Description : The reagent used to test the presence of starch in leaves is (1) Fehling’s solution (2) Iodine solution (3) Million’s reagent (4) Benedict’s solution

Last Answer : Iodine solution

Description : Which one of the following reacts with Fehling’s solution?

Last Answer : HCHO

Description : Benzaldehyde does not react with (a) Tollens' reagent (b) Phenylhydrazine (c) Fehling's solution (d) NaHSO3

Last Answer : Fehling's solution

Description : Benzaldehyde can be distinguished from acetophenone by using : (a) Tollens' reagent (b) Lucas reagent (c) Fehling's reagent (d) All of these

Last Answer : Tollens' reagent

Description : The reagent that can be used to differentiate an aldose and a ketose is : (a) Bromine water (b) Fehling's solution (c) Tollens' reagent (d) None of these

Last Answer : Bromine water

Description : Which of the following statements is false about sucrose? (a) It is also called table sugar. (b) It may be fermented by yeast to produce alcohol. (c) It reduces Fehling's solution. (d) It does not reduce Tollens' reagent.

Last Answer : It reduces Fehling's solution

Description : Acetaldehyde on treatment with Fehling's solution gives a precipitate of (a) Cu (b) Cu2O (c) CuO (d) None of these

Last Answer : Cu2O

Description : Which of the following reagents will react readily with both aldehydes and ketones? (a) Grignard reagent (b) Fehling's reagent (c) Tollens' reagent (d) Schiff's reagen

Last Answer : Grignard reagent

Description : Which one of the following reacts with Fehling's solution?

Last Answer : HCHO

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 : Organic Chemistry: E2 reaction mechanism?

Last Answer : potassium tert-butoxide is a strong and exceptionally hindered base and therefore is only capable of abstracting primary (terminal) hydrogens in non-cyclic alkyl halides. The E2 mechanism is concerted, so there are no rearrangements.

Description : Curved arrows are used in Organic Chemistry to show the moment of electrons in the mechanism of a reaction . The correct product of the following rect

Last Answer : Curved arrows are used in Organic Chemistry to show the moment of electrons in the mechanism of a reaction . ... of the following rection is B. C. D.

Description : Which of the following reaction mechanism doe not involves carbocation as an intermediate ?

Last Answer : Which of the following reaction mechanism doe not involves carbocation as an intermediate ? A. ... C. Fries Rearrangements D. Diels- Alder reaction

Description : The only CORRECT combination in which the reaction proceeds through radical mechanism is

Last Answer : The only CORRECT combination in which the reaction proceeds through radical mechanism is A. (IV)(i)(Q) B. (III)(ii)(P) C. (II)(iii)(R) D. (I)(ii)(R)

Description : Find out number of reaction which involve electron deficient nitrogen during reaction mechanism.

Last Answer : Find out number of reaction which involve electron deficient nitrogen during reaction mechanism.

Description : Which one of the following statements concerning glucose metabolism is correct? (A) The conversion of Glucose to lactate occurs only in the R.B.C (B) Glucose enters most cells by a mechanism in ... ) An elevated level of insulin leads to a decreased level of fructose 2, 6-bisphosphate in hepatocyte

Last Answer : C

Description : In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of (A) Cross linked polystyrene (B) Phenol formaldehyde resins (C) Polyesters (D) Polyamides

Last Answer : (A) Cross linked polystyrene

Description : Overall rate of reaction in a heterogeneous catalytic reaction depends upon the mass and energy transfer from the fluid to solid surface and its rate of reaction is usually __________ the concentration of ... to (B) Independent of (C) Inversely proportional to (D) Proportional to the square o

Last Answer : (A) Proportional to

Description : The exit age distribution of fluid leaving a vessel is used to know the (A) Activation energies of a reaction (B) Reaction mechanism (C) Extent of non-ideal flow in the vessel (D) None of these

Last Answer : (C) Extent of non-ideal flow in the vessel

Description : A catalyst in a chemical reaction (A) Decreases the activation energy (B) Alters the reaction mechanism (C) Increases the frequency of collisions of reacting species (D) All (A), (B) and (C)

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

Description : The heat of reaction (A) Depends on the pressure only (B) Depends on the mechanism of reaction only (C) Depends on both pressure and mechanism of reaction (D) Is independent of the mechanism of reaction

Last Answer : (D) Is independent of the mechanism of reaction

Description : Which of the following factors influence whether a reaction will proceed by an SN1, SN2, E1, or E2 mechanism? (a) Structure of the alkyl halide (b) Solvent (c) Concentration of reagents (d) Nature of the nucleophile (e) All of these

Last Answer : All of these

Description : Free energy changes for two reaction mechanism 'X' and 'Y are respectively - 15 and - 5 units. It implies that ‘X’ is (A) Slower than Y (B) Faster than Y (C) Three times slower than Y (D) Three times faster than Y

Last Answer : (B) Faster than Y

Description : Chemical engineering thermodynamics is concerned with the __________ in/of chemical processes. (A) Reaction mechanism (B) Calculation of rates (C) Energy transformation from one form to another (D) None of these

Last Answer : (C) Energy transformation from one form to another

Description : Which one of the following statements regarding a catalyst is not correct? A An enzyme is a catalyst that only binds certain substrates. B An enzyme is a protein that is a highly ... increasing the activation energy. D Catalysts do not alter the equilibrium constant for a chemical reaction.

Last Answer : C Catalysts increase the rate of a reaction by altering the mechanism, thereby increasing the activation energy.