Consider the following statements regarding naturally occurring acids: 1. Lactic acid is the primary constituent of vinegar. 2. Oxalic acid is found in spinach. 3. Ascorbic acid is also known as Vitamin C. Which of the statements given above is/are correct?

The correct option is (c). Explanation Naturally occurring acids are organic acids found in various plant and animal sources. Unlike mineral acids, these are typically weak acids found in everyday food items. Statement-wise Analysis: - Statement 1 is Incorrect: Vinegar is primarily a dilute solution of acetic acid (ethanoic acid). Lactic acid is the acid present in sour milk or curd. - Statement 2 is Correct: Oxalic acid is naturally found in spinach. It is also present in tomatoes. - Statement 3 is Correct: Ascorbic acid is the chemical name for Vitamin C. It is abundantly found in citrus fruits (such as lemons and oranges) and Indian gooseberry (amla). Key Takeaway: Important natural acid sources include: Vinegar (Acetic acid), Curd (Lactic acid), Citrus fruits (Citric acid), Spinach/Tomatoes (Oxalic acid), Tamarind (Tartaric acid), and Ant stings (Methanoic/Formic acid).

Consider the following statements regarding naturally… - NCERT Class 7 Science MCQ

NCERT Class 7 Science — Chapter 1: Acids, bases and salts

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Consider the following statements regarding naturally occurring acids:

Lactic acid is the primary constituent of vinegar.
Oxalic acid is found in spinach.
Ascorbic acid is also known as Vitamin C.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 7 · Page 39

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

Naturally occurring acids are organic acids found in various plant and animal sources. Unlike mineral acids, these are typically weak acids found in everyday food items.

Statement-wise Analysis:

Statement 1 is Incorrect: Vinegar is primarily a dilute solution of acetic acid (ethanoic acid). Lactic acid is the acid present in sour milk or curd.
Statement 2 is Correct: Oxalic acid is naturally found in spinach. It is also present in tomatoes.
Statement 3 is Correct: Ascorbic acid is the chemical name for Vitamin C. It is abundantly found in citrus fruits (such as lemons and oranges) and Indian gooseberry (amla).

Key Takeaway:
Important natural acid sources include: Vinegar (Acetic acid), Curd (Lactic acid), Citrus fruits (Citric acid), Spinach/Tomatoes (Oxalic acid), Tamarind (Tartaric acid), and Ant stings (Methanoic/Formic acid).

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More from Chapter 1: Acids, bases and salts

With reference to the chemical nature of substances, consider the following statements: 1. All substances that taste sour contain acids. 2. Substances that taste bitter and feel soapy on touching are generally acidic in nature. 3. Baking soda is an example of a substance that has a bitter taste and is basic in chemical nature. Which of the statements given above is/are correct?

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