One of the major uses of alkane is

Correct answer: as domestic and industrial fuel.

Explanation: Alkanes (e.g., methane, propane, butane) burn cleanly and release a lot of energy, so they are widely used as fuels for cooking, heating, and industry.

• in the hydrogenation of oils – Requires hydrogen gas (H₂) with a Ni catalyst; alkanes are not the reagent.
• in the textile industries – Not a primary/defining use of alkanes.
• in the production of plastics – Plastics are mainly made from alkenes (e.g., ethene → polyethylene), not directly from alkanes (though alkanes can be cracked to make alkenes).