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

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
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(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.
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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

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Iodine solution is used to test the presence of – (1) Sugar (2) Proteins (3) Starch (4) Fats

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

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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

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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.

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

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

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

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The acidic solution of a salt produced a deep blue colour with starch iodine solution. The salt may be

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Iodine solution produces no color with (A) Cellulose (B) Starch (C) Dextrin (D) Glycogen

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How would you test the presence of starch in leaves? -Science-7

Description : How would you test the presence of starch in leaves? -Science-7

Last Answer : Experiment to test the presence of starch in leaves: i. Take two healthy green potted plants of the same type. ii. Keep one potted plants in a dark room for one or two days in order to ... react to iodine test;where as the leaf which received sunlight turn into bluish black,as it contain starch.

Iodine test is positive for starch, dextrin and (A) Mucoproteins (B) Agar (C) Glycogen (D) Cellulose

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On boiling Benedict’s solution is not reduced by (A) Sucrose (B) Lactose (C) Maltose (D) Fructose

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Last Answer : A

On boiling Benedict’s solution is not reduced by (A) Sucrose (B) Lactose (C) Maltose (D) Fructose

Description : On boiling Benedict’s solution is not reduced by (A) Sucrose (B) Lactose (C) Maltose (D) Fructose

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Which of the following carbohydrates will not give a red precipitate of Cu2O when heated with Benedict's solution? (a) Maltose (b) Glucose(c) Sucrose(d) Fructose

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Last Answer : answer:

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For testing the presence of starch in leaves, a boiled leaf is used. Why? -Science-7

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Iodine gives a red colour with (A) Starch (B) Dextrin (C) Glycogen (D) Inulin

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A sample of water from a river was analyzed for the presence of metal ions and the observations were recorded as given below `{:("Reagent added","Obse

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Description : N-terminal amino acids of a polypeptide are estimated by (A) Edmann reaction (B) Sanger’s reagent (C) Formaldehyde test (D) Ninhydrine reaction

Last Answer : Answer : A

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Last Answer : ANSWER: Z -- BLUE-GREEN