Creating flashcards or a small table for the compounds and their functions listed in the "Chemistry in Everyday Life" chapter is a very effective way to memorize these facts for exams. Key categories include medicines (antiseptics, analgesics, etc.), food additives (sweeteners, preservatives), and cleaning agents (soaps, detergents).
Step 1: Understanding the Concept:
This question requires identifying the class or function of several common chemical compounds used in daily life, a topic covered in "Chemistry in Everyday Life". Step 2: Matching Each Chemical to its Type:
- A. Bithionol: This compound is added to soaps to impart antiseptic properties. It reduces the odor produced by bacterial decomposition of organic matter on the skin. Thus, Bithionol is an Antiseptic. A \(\rightarrow\) III.
- B. Saccharin: Saccharin is one of the oldest and most well-known Artificial sweeteners. It is several hundred times sweeter than sucrose (table sugar) and is used in products for diabetic people and as a sugar substitute. B \(\rightarrow\) I.
- C. Sodium benzoate: Sodium benzoate is a widely used Food preservative. It is particularly effective in acidic foods like soft drinks, jams, and pickles, where it inhibits the growth of bacteria, yeast, and molds. C \(\rightarrow\) IV.
- D. Norethindrone: Norethindrone is a synthetic progestogen. It is a key component in many birth control pills and is used to prevent pregnancy. Therefore, it is an Antifertility drug. D \(\rightarrow\) II. Step 3: Assembling the Correct Match:
The correct matches are:
- A \(\rightarrow\) III
- B \(\rightarrow\) I
- C \(\rightarrow\) IV
- D \(\rightarrow\) II
This combination corresponds to option (A). Step 4: Final Answer:
The correct set of matches is A-III, B-I, C-IV, D-II. Therefore, option (A) is correct.
