An organic compound X when reacts with sodium liberateshydrogen. The same compound X when heated at 443 K in thepresence of concentrated sulphuric acid gives an unsaturatedhydrocarbon.

Step 1: The given information states that an organic compound X reacts with sodium to liberate hydrogen.

Step 2: This means that when compound X comes into contact with sodium, a chemical reaction occurs, resulting in the release of hydrogen gas.

Step 3: The information also mentions that when compound X is heated at 443 K in the presence of concentrated sulphuric acid, it forms an unsaturated hydrocarbon.

Step 4: This indicates that when compound X is subjected to heat in the presence of concentrated sulphuric acid at a temperature of 443 K, a chemical reaction takes place, leading to the formation of an unsaturated hydrocarbon.

In summary, compound X exhibits two different reactions: one with sodium, which produces hydrogen gas, and another when heated with concentrated sulphuric acid, which results in the formation of an unsaturated hydrocarbon.