It depends on why the solution is colored. If it's colored due to the presence of transition metal ions, you may be able to change the color but not render it colorless. If it's colored by a dye, then adding some kind of chemical bleach such as a peroxide will probably work.
A colored solution may be decolorized by undergoing a process called decolorization. This is the removal of brightly colored organic impurities from the solution.
To be considered a solution, it has to be a homogeneous mixture. Where you have liquids, they may not dissolve into one another, such as water and oil, and you have a clear division where the liquids don't mix. Where as gases, is they are in a closed system, are homogeneous because there is nothing there to stop the molecules from occupying a relatively homogeneous arrangement.
A solution or mixture.
yes may be
an alloy is a solid solution and a solution usually refers to solid or gas
This depends: an ink may be a true sollution or a colloidal solution, or a suspension.
There are no colored cards on the island. There are colored keys in Captain Crawfish's dream, but they are used right there to open the chests (red key opens the bottom chest, green key opens the top). (see the related solution question, which may answer your question)
"Colorado" may either mean colored, or red.
Depending upon the amount of solute in the solution, the solutions may either be saturated, unsaturated and super saturated.Depending upon the physical states of solute and solvent, the solutions may either be solids-solids(metal alloys), liquid-liquid(alcohol in water), gas-gas(air)
There are some mathematical problems which do not have an exact solution. However, there may be a related, or similar, problem that can be solved exactly. In that case, you may be able to start with the exact solution to the related problem and add a small perturbation - a small amount - to that so as to formulate the "unsolvable" problem.
grey/brown
On excessive cooling may produce colloidal particles from true solution or a reaction with another substance may produce such solution.
a dilute aqueous solution of KMnO4 may be used.
It may or may not exist. If the matrix of coefficients is singular then there is no solution.
People may wear colored lab coats typically as a costume for fun purposes. Doctors may wear colored lab coats to reflect the nature of their work, such as how black is perceived as a somber color.
A soluble constituent when completely dissolved in a solvent, which may be water or any other liquid is called a homogenous solution. When more than one solutes are dissolved then it becomes heterogenous,
A soft drink may be a homogeneous solution but also a heterogeneous solution.
Any difference exist. A simple solution may be a diluted solution.