Match the entries of column I with the appropriate entries of column II.

A-III; B-I; C-II; D-IV

The correct answer is option 1. A-III; B-I; C-II; D-IV.

Here is an explanation of the match between the entries of column I and column II:

(A) Sodium perborate: Sodium perborate is a chemical compound commonly used as a bleaching agent, particularly in laundry detergents and household cleaning products. It has excellent stain-removing properties and is effective at whitening fabrics, including milk stains. Therefore, it is associated with the function of bleaching milk stains, matching with option (III)

(B) Chlorine: Chlorine is a highly reactive chemical element commonly used as a disinfectant. It is widely employed to sanitize water supplies, swimming pools, and surfaces by killing or deactivating harmful microorganisms, including bacteria and viruses. Hence, it is correctly matched with option (I), which denotes its role as a disinfectant.

(C) Bithional: Bithional is an antiseptic agent known for its ability to inhibit the growth of bacteria and fungi. It is commonly used in personal care products such as soaps, shampoos, and antiseptic creams to prevent infections and promote hygiene. Therefore, it aligns with option (II), indicating its function as an antiseptic.

(D) Potassium stearate: Potassium stearate is a type of soap derived from the potassium salt of stearic acid. Soaps are surfactant compounds that exhibit cleansing properties by emulsifying oils and dirt, allowing them to be easily rinsed away with water. Thus, potassium stearate corresponds to option (IV), which denotes its classification as a soap.

Summary:

The match between the entries of column I and column II accurately reflects the functions and classifications of the chemical compounds listed. Each compound is appropriately associated with its respective role in cleaning, disinfection, or antimicrobial activity, providing a comprehensive understanding of their applications in various contexts.