Ethyl alcohol cannot be dried by anhydrous CaCl₂ because

Q. Ethyl alcohol forms $CaC{l}_2.X{C}_2{H}_{5}OH;MgC{l}_2.Y{C}_2{H}_{5}OH$ and $CuS{O}_4.Z{C}_2{H}_{5}OH$ when $C_2{H}_{5}OH$ reacts with respective respective anhydrous salts. Then?

Q. $K_{2}C{O}_3$ cannot be prepared by solvay ammonia process because

Q. Hydrogen chloride gas being highly soluble in water is dried by
(i)Anhydrous calcium chloride
(ii)Phosphorous ​ pentoxide
(iii) Quicklime
(iv)Conc. sulphuric acid

Q. $CuS{O}_4$ when reacts with $KCN$ forms $CuCN$ which is insoluble in water. It is soluble in excess of $KCN$, due to formation of the following complex:

Q. Which of the following organic compounds could not be dried by anhydrous $CaC{l}_2$?