Identify the solutions among the following mixtures and choose the correct option.
(a) Soil

(b) Sea water 

(c) Air

(d) Coal

(e) Soda water

(b), (c) and (e)

The correct answer is option 2. (b), (c) and (e).

Let us analyze each component to determine whether it is a solution or not:

(a) Soil: Soil is not a solution. It is a complex mixture of various components, including minerals, organic matter, water, and air. It does not exhibit the uniform and homogeneous characteristics of a solution.

(b) Sea water:  Sea water is a solution. It is a homogeneous mixture of various salts and minerals dissolved in water. The composition of sea water is relatively uniform throughout, making it a solution.

(c) Air: Air is a solution. It is a gaseous mixture primarily composed of nitrogen, oxygen, carbon dioxide, and other trace gases. Despite being a mixture, air exhibits uniform composition and properties throughout, resembling a solution.

(d) Coal: Coal is not a solution. It is a heterogeneous mixture composed of various organic and inorganic components, including carbon, water, minerals, and volatile matter. The composition of coal is not uniform, and it does not meet the criteria of a solution.

(e) Soda water:  Soda water is a solution. It is a homogeneous mixture of carbon dioxide gas dissolved in water, often with added flavors and sweeteners. The dissolved carbon dioxide gives soda water its characteristic fizziness.

Based on the analysis:

Solutions: Sea water (b), Air (c), and Soda water (e)

Not solutions: Soil (a) and Coal (d)

Therefore, the correct option is (b), (c), and (e).