Question

What is the major acid present in citrus fruits like lemons and oranges?

• A. Acetic acid
• B. Lactic acid
• C. Citric acid
• D. Tartaric acid

Hint:

Citric acid is widely used in the food industry as an acidulant, preservative, and flavor enhancer due to its natural occurrence and safety.

Answer 1

The Correct Option is C

Concept: Organic acids are naturally present in fruits and contribute to their taste, preservation, and biochemical properties. Citrus fruits such as lemons, oranges, and limes are particularly rich in citric acid, which gives them their characteristic sour taste.
Step 1: Understand the role of acids in fruits.
Organic acids:

• Provide sourness and flavor
• Act as natural preservatives
• Participate in metabolic pathways

Step 2: Analyze the given options.

• Acetic acid – found in vinegar
• Lactic acid – found in fermented products like curd
• Citric acid – found in citrus fruits
• Tartaric acid – found in grapes and tamarind

Step 3: Identify the correct acid.
Citrus fruits predominantly contain citric acid, making it the correct answer.