yes
It is a basic solution
yes
Sodium chloride (NaCl) in water is a true solution.
21 is the only solution of that equation.
No, kerosene in water is not a true solution. Kerosene is immiscible in water, which means that they do not mix together to form a homogeneous solution. Instead, kerosene forms separate droplets in water due to differences in their polarities.
Alum (Aluminum Sulfate) is/was used to cause particles in water (mud) to coagulate and settle to the bottom to obtain clear water off the top. That is, it is used to make muddy or cloudy water clear as a first step in turning river water into drinking water. Nowadays, polymers are used instead. Some say that Alum causes alzeimers (1970's) but if that is true, the information was successfully hushed while most of America drank water treated with alum for decades. Lime is used to adjust the ph that is lowered by the alum. There is also a process using lime that actually removes hardness (calcium and magnesium) from drinking water obtained from limestone aquifers. This process is called Lime Soda Softening.
Yes, pure water can be classified as a solution because it is a homogeneous mixture of water molecules.
Potash alum is another name for potassium alum. Alum is a class of molecular compounds, and included in the class is potassium alum. So, they are not the same thing, but yet very similar in that potash alum is a member of the alum class.
yes" tea is a true solution.................
yes
No, starch added to water at room temperature forms a colloidal suspension, not a true solution. The starch particles do not fully dissolve in the water but dispersed throughout, leading to a cloudy mixture rather than a clear solution.
No. The solids in muddy water are in suspension rather than true solution; most true solutions in water are transparent, at least in thin layers. Muddy water is not really a solution at all. You can't see through it it's parts can be filtered out. So, your answer is NO muddy water is not a true solution.