Question

what happens when hydrogen is passed through vegetable oil in the presence of nickel catalyst​

Answer 1

Answer. When hydrogen is added to a vegetable oil it changes into a solid form called vanaspati ghee in the presence of nickel called catalyst through the process of hydrogenation.

Answer 2

Answer:

Vegetable oils are unsaturated fats having double bonds between some of their carbon atoms. When a vegetable oil is heated with hydrogen in the presence of finely divided nickel then a saturated fat called vegetable ghee is formed. This reaction is called hydrogenation of oils. ,

Vegetable oils is in liquid state at room temperature whereas vegetable ghee(sturated fat) is solid( or semi-solid) at room temperature.

Nickel acts as a catalyst in the process of hydrogenation of vegetable oil .