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| Q. |
Which acid is present in lemon? |
| A. | marlic acid |
| B. | citric acid |
| C. | lactic acid |
| D. | tartaric acid |
| Answer» B. citric acid | |
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Explanation: Citric acid is a weak organic acid with the formula C6H8O7.The juice of the lemon is about 5% to 6% citric acid, which gives a sour taste. |
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