Match List-I with List-II and select the correct answer using the code given below the Lists: List-I(Compound) A) Boric acid B) Citric acid C) Magnesium D) Acetic acid List-II(Use) 1) Antiseptic 2) Food preservative 3) Antacid Hydroxide 4) Pickle

The matching of compounds to their uses is as follows: Boric acid is widely recognized for its mild antiseptic and antimicrobial properties, often used in eyewashes. Citric acid, naturally found in citrus fruits like oranges and lemons, is a common food preservative and flavoring agent. Magnesium hydroxide, also known as Milk of Magnesia, is a mild base used as an antacid to neutralize excess stomach acid during indigestion [1]. Acetic acid, the primary component of vinegar, is extensively used as a preservative in pickles because its acidic environment inhibits the growth of microorganisms [1]. Therefore, the correct sequence is A-1, B-2, C-3, D-4. This reflects the practical application of these chemicals in daily life, where their specific chemical properties—such as pH alteration and biological inhibition—are leveraged for health and food safety.

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 2: Acids, Bases and Salts > Table 2.3 Some naturally occurring acids > p. 28