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Which acid is found in lemon and other citrus fruits?
A. Acetic acid
B. Citric acid
C. Lactic acid
D. Hydrochloric acid
Correct Answer Is Option = Citric acid
Notes / Explanation
The acid found in lemons and other citrus fruits is citric acid, which gives these fruits their characteristic sour taste. Many fruits and other foods contain natural acids, which contribute to their taste, and the sour or tangy taste of citrus fruits, such as lemons, limes, oranges and similar fruits, comes mainly from the citric acid that they contain. Citric acid is a mild, natural acid, and it is present in particularly large amounts in lemons and limes, which are among the most sour of the citrus fruits, while it is present in somewhat smaller amounts, along with sugars, in the sweeter citrus fruits such as oranges, giving them their pleasant balance of sweet and tangy flavours. Citric acid is not harmful in the amounts found in fruits, and it is a natural part of these foods. Besides being found naturally in fruits, citric acid is also widely used as an additive in many prepared foods and drinks, where it is used to give a sour or tangy flavour, to help preserve the food, and for other purposes, so that it is a very commonly used substance in the making of food and drink. Citric acid also has various other uses. The presence of natural acids in foods is a common feature, and different foods contain different acids; for example, vinegar contains a different acid that gives it its sour taste, and sour milk and certain other foods contain yet another acid. The acids found in foods are generally mild and are a natural part of the foods. The study of the substances found in foods, including the natural acids, is a part of general knowledge and of the science of chemistry. It is worth noting that the acid of the stomach, which helps in digestion, is a different and much stronger acid produced by the body itself. For PPSC and other competitive examinations, the key points to remember are that the acid found in lemons and other citrus fruits is citric acid, that it gives these fruits their characteristic sour taste, that it is present in particularly large amounts in lemons and limes and in smaller amounts, along with sugars, in sweeter citrus fruits such as oranges, and that besides being found naturally in fruits it is widely used as an additive in many prepared foods and drinks to give flavour and to help preserve them.
