Some people have never heard of CuCl but now is the time that they will learn more about this. The answer to the question is C. CuCl or Copper (I) Chloride is also known as Coprous Chloride. This may seem like it is in liquid form, but it is not. It comes in the form of white powder. Try to mix it in with water, and it is only mildly soluble.
Most of the powder will stay on the top portion of the water. This is very soluble when you mix it with highly concentrated hydrochloric acid. Take note that some impure samples of this may be light brown but can turn a green color.
The answer to this question is Copper (1) Chloride. There are some people who are more familiar with this as cuprous chloride. This is similar to the usual copper but the chloride level is going to be lower. In order to distinguish this through its appearance, take a look at the way that it looks.
This is colored white and it is soluble in water as well. There are also other liquids that will make it soluble but this is most soluble if you would place it in Hydrochloric Acid or HCl. There are some impure samples that you can find which comes with green fragments.