Question

A certain compound when burnt gave three oxides. The first turned lime water milky, the second turned cobalt chloride paper pink and third formed an aqueous solution of pH 3 nearly. The elements present in the compound are

• A. C, S, O
• B. C, H, Na
• C. C, H, S
• D. C, H, Ca

Answer 1

The correct option is C C, H, S

C forms $C{O}_2$ which turns lime water milky, H forms $H_{2}O$ which turns cobalt chloride paper pink and S forms $S{O}_3$ in aqueous solution forms$H_{2}S{O}_4$