Phenol on hydrogenation in the presence of nickel catalyst at `160^(@)C` gives

Phenol on reduction with H_2 in the presence of nickel catalyst gives

Addition of hydrogen to alkene in presence of nickel catalyst is

What is the product obtained when alkynes are subjected to hydrogenation in the presence of lindlar's catalyst?

The gas used in the hydrogenation of oils in presence of nickel as a catalyst is:

The hydrogenation of vegetable oil in the presence of nickel catalyst forms vanaspati ghee. Give reason.

Oils on treating with hydrogen in the presence of palladium or nickel catalyst from fats. This is an example of

The gas(es) used in the hydrogenation of oils in presence of nickel as a catalyst is/are: