21 previous year questions • General Science & Technology
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UPSC 2006
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 ascorbic acid in our nutrition. Which of the statements given above are correct?