Match List I with List II

Choose the correct answer from the options given below:

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

The correct answer is option 3. A-IV, B-III, C-II, D-I.

Let us discuss each item from List I and match them with their corresponding descriptions from List II:

A. Soda water: Soda water is a carbonated beverage, commonly known as sparkling water or fizzy water. It is produced by dissolving carbon dioxide gas under pressure into water. The dissolved carbon dioxide gives soda water its characteristic effervescence or fizz. Therefore, soda water corresponds to "A solution of gas in liquid."

B. Sugar solution: A sugar solution is created by dissolving sugar (a solid) in water (a liquid). When sugar is added to water and thoroughly mixed, it forms a homogeneous mixture where the sugar molecules are evenly dispersed throughout the water. This type of solution is called a "solution of solid in liquid."

C. German Silver: German Silver is an alloy composed mainly of copper, zinc, and nickel, all of which are solids. Alloys are homogeneous mixtures of metals, where the atoms of different metals are mixed uniformly on the atomic level. Therefore, German Silver corresponds to "A solution of solid in solid."

D. Air: Air is a mixture of gases, primarily nitrogen (~78%), oxygen (~21%), and traces of other gases such as carbon dioxide, argon, and others. These gases are mixed together homogeneously in the atmosphere. Therefore, air corresponds to "A solution of gas in gas."

Matching these with the options provided:

1. A-I, B-II, C-III, D-IV: Incorrect, as it does not match the descriptions correctly.

2. A-II, B-III, C-IV, D-I: Incorrect, as it does not match the descriptions correctly.

3. A-IV, B-III, C-II, D-I: Correct:
A (Soda water) - IV (A solution of gas in liquid)
B (Sugar solution) - III (A solution of solid in liquid)
C (German Silver) - II (A solution of solid in solid)
D (Air) - I (A solution of gas in gas)

4. A-III, B-II, C-I, D-IV: Incorrect, as it does not match the descriptions correctly.

Therefore, the correct answer is option 3: A-IV, B-III, C-II, D-I.