Question

(a) What is meant by an addition reaction ? Give an example (with equation) of an addition reaction of an alkene.
(b) What is added to groundnut oil when it is to be converted to vanaspati ghee ?
(c) Which of the two is better for our health : butter or vegetable oil ? Why ?

Lakhmir Singh Chemistry Class 10

Answer 1

Answer:

addition reaction in which we add the compunds

Answer 2

Addition reaction are the reactions in which hydrogen is added to unsaturated hydrocarbons  and give saturated hydrogen carbons.

eg:

Ethene                      Ni CATALYST      ETHANE

CH2=CH2 + H2      ------------------------->CH3-CH3

                                    heat

B)What is added to groundnut oil when it is to be converted to vanaspati ghee ?

Vegetable oil are  unsaturated hydrocarbons containing double bonds. Hydrogen is added and heated in presence of Nickel catalyst to give vanaspati ghee

                                         Ni CATALYST

Vegetable oil + H2  ---------------------------------> Vegetable ghee

                                          heat

c)Vegetable oils containing unsaturated fatty acids are good for health.