The synonym for water gas when used in the production of methanol is:

The basic principle of the hydrogen economy is the transportation and storage of energy in the form of liquid or gaseous hydrogen. Which property of hydrogen may be useful for this purpose? Support your answer with a chemical equation if required.

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

Which of the following oxides cannot be reduced by hydrogen?

Which of the following statements is incorrect?

Asthma patients use a mixture of $.....$ for respiration.