Practicing Success
Match List I with List II
Choose the correct answer from the options given below: |
(A)-(IV), (B)-(I), (C)-(III), (D)-(II) (A)-(I), (B)-(II), (C)-(III), (D)-(IV) (A)-(III), (B)-(I), (C)-(II), (D)-(IV) (A)-(III), (B)-(I), (C)- (IV), (D)-(II) |
(A)-(III), (B)-(I), (C)- (IV), (D)-(II) |
The correct answer is option 4. (A)-(III), (B)-(I), (C)- (IV), (D)-(II).
Let us break down the explanations for each match in List I and List II: (A) Antifreeze used in car engine - (III) Ethylene glycol: Antifreeze: This is a liquid coolant added to the car's engine cooling system to prevent freezing in cold weather and overheating in hot weather. Ethylene glycol: This colorless, odorless liquid has a much lower freezing point compared to water. It also has a high boiling point, making it suitable for car engines. When mixed with water in the appropriate ratio, it creates a solution with a freezing point significantly lower than water alone, protecting the engine from freezing damage. (B) Starting material for picric acid - (I) Phenol: Picric acid: This yellow crystalline compound is a strong organic acid with historical uses as an explosive material. Phenol: This is a white crystalline solid with a distinct odor. It's a starting material for the production of picric acid through a nitration process where a nitro group (NO2) is introduced into the phenol ring. (C) Wood spirit - (IV) Methanol: Wood spirit: This term was historically used for a crude form of methanol obtained by distilling wood. It's a mixture of various alcohols and other volatile compounds. Methanol: This is the simplest alcohol with the formula CH3OH. Today, methanol is produced synthetically and is a versatile solvent used in various applications, including cleaning products, antifreeze solutions, and as a fuel source (biodiesel). (D) By product of soap industry used in cosmetics - (II) Glycerol: Glycerol: This is a colorless, viscous liquid produced as a byproduct when fats and oils undergo a chemical reaction with an alkali (like lye) to create soap. Cosmetics: Glycerin is a humectant, meaning it attracts and retains moisture. This property makes it a valuable ingredient in various cosmetic products like lotions, creams, and hair care products to keep the skin and hair hydrated. |