Answer:
A white, crystalline powder that dissolves in water to produce a solution that conducts electricity is CaCl2(Calcium chloride)
Step-by-step explanation:
- This is because CaCl2 is ionic - compound .Ionic compounds dissolved in water and conducts electricity due to presence free ions.(Ca2+ , Cl-)
- SO2 and NO2 : Exist in the form of gas . Both are covalent and Do not produce ions in water . Hence non- conducting.
- NO2 is brown gas and SO2 is colourless gas