Question : Pectin, which is responsible for the firmness and softness of fruits is mainly composed of which acid unit?
Option 1: Aspartic acid
Option 2: D-Galacturonic acid
Option 3: Lactic acid
Option 4: Glutamic acid
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Correct Answer: D-Galacturonic acid
Solution : The correct option is D-galacturonic acid.
Pectin, a complex carbohydrate found in the cell walls of plants, is primarily composed of galacturonic acid units. These units are linked together to form a polymer. Pectin is a common ingredient in food processing, especially when producing jams, jellies and other preserves. It gives fruits their gel-like consistency.
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Question : Which one of the following chemicals is associated with muscle fatigue ?
Option 1: Uric acid
Option 2: Acetic acid
Option 3: Pyruvic acid
Option 4: Lactic acid
Question : Oxyntic cell is meant for the secretion of
Option 1: Pepsin
Option 2: Enterokinase
Option 3: Hydrochloric acid
Question : Which of the following is also known as Carbolic Acid?
Option 1: Phenol
Option 2: Hydroxide
Option 3: Sulphuric Acid
Option 4: Ethanol
Question : Which of the soluble fibres found in fruits is used as a thickener in cooking and baking?
Option 1: Lignin
Option 2: Cellulose
Option 3: Pectin
Option 4: Insulin
Question : Terylene is a condensation polymer of ethylene glycol in which acid?
Option 1: Benzoic acid
Option 2: Salicylic acid
Option 3: Phthalic acid
Option 4: Terephthalic acid
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