Question

Match the following

S.No	Source	Acid present
1	Apple	Oxalic acid
2	Lemon	Tartaric acid
3	Grapes	Malic acid
4	Tomato	Citric acid

Answer 1

Hint: Some of the major acids present in fruits are citric acid, malic acid, tartaric acid etc.The organic acids malic, citric, isocitric, galacturonic, quinic, oxalic, and tartaric are very abundant in some fruits, and the phenolic acids and ascorbic acid are of ubiquitous occurrence in fruits.

Complete step by step answer:
We can see the majority of the common organic acids in food are found in fruits.
We all know that fruits such as orange, lemon and limes contain citric acid in them and they are called citrus fruits.
We must have not known that apples contain malic acid in major proportion and grapes contain tartaric acid in higher percentages.
We can discuss some of the acids present in fruits.
Citrus acid is found in a huge percentage in lemons and limes, oranges and grapefruits, berries such as strawberries, raspberries, and gooseberries.
Malic acid is importantly found in apples, apricots, peaches, and watermelon.
Tartaric acid is not commonly found in fruits, but it is present in grapes and avocadoes. It gives flavouring to sour candies, but is mostly used in wine.
Other sides such as succinic, oxalic acid, benzoic acid, isocitric and quinic acid play smaller parts in the body.
Let us now match the source with given acid.
Malic acid is found in apples.
Citric acid is found in lemon.
Grape contains tartaric acid.
Tomato contains oxalic acid.

S.No	Source	Acid present
1	Apple	Malic acid
2	Lemon	Citric acid
3	Grapes	Tartaric acid
4	Tomato	Oxalic acid

In tomatoes, acids such as citric acid, malic acid are also present but a higher amount of oxalic acid is seen in it.

Note:
We must know that the acid present in fruits is also used as preservatives due to their ability to decrease the onset of degradation of bacteria. Mixtures of acid and sugar in fruit, gives them a specific flavour.