Consider the following statements:1. Caffeine, a constituent of tea and coffee is a diuretic.2. Citric acid is used in soft drinks.3. Ascorbic acid is essential for formation of bones and teeth.4. Citric acid is a good substitution for ascorbic acid in our nutrition.Which of the statements given above are correct?
✓ Correct answer: b) 1, 2 and 3 only
ExplanationStatement 1 is correct: Caffeine, a constituent of tea and coffee is a diuretic.It means it increases urine production by promoting fluid loss from the body.It acts by inhibiting the reabsorption of sodium and water in the kidneys which leads to increased urination.Statement 2 is correct: Citric acid is a common additive in soft drinks.It is used to add tartness and flavor, and it also helps to preserve the drinks.Citric acid occurs naturally in citrus fruits such as lemons and oranges, and its acidic nature helps balance the sweetness of soft drinks and prolong shelf life.Statement 3 is correct: Ascorbic acid, commonly known as Vitamin C, plays a crucial role in the synthesis of collagen, a protein that is essential for the structure of bones, teeth, skin, blood vessels, and cartilage.Deficiency in Vitamin C can lead to scurvy, a condition characterized by weakened connective tissue, bleeding gums, and joint pain due to impaired collagen formation.Statement 4 is incorrect: Citric acid primarily serves as a flavoring agent and preservative.While it has antioxidant properties
Practice more Science PYQs
Attempt a free 10-question quiz or browse the full Science & Technology previous-year-question bank with instant answers and explanations.
🔬 Science PYQs →