Select correct answers from the choices A, B, C, D which are given. Write down only the letter corresponding to the correct answer.
Which salt forms coloured solution when dissolved in water?

Options

A. calcium chloride
B. zinc carbonate
C. copper sulphate
D. calcium carbonate

Answer

To solve the question of which salt forms a colored solution when dissolved in water, we will analyze the options provided:

1. **Calcium Chloride (CaCl2)**: This salt is known to be white in color and does not produce a colored solution when dissolved in water.

2. **Zinc Carbonate (ZnCO3)**: This salt is also white and does not produce a colored solution when dissolved in water.

3. **Copper Sulfate (CuSO4)**: This salt is known for its distinctive blue color. When dissolved in water, it forms a blue solution, indicating that it is the salt that produces a colored solution.

4. **Calcium Carbonate (CaCO3)**: This salt is white in color and does not produce a colored solution when dissolved in water.

From the analysis above, the only salt that forms a colored solution when dissolved in water is **Copper Sulfate (CuSO4)**.

Thus, the correct answer is **C**.