Answer :

(a) The electron dot structure of ethene is


Ethene is a non-polar molecule and will not dissolve in water (polar solvent). Since it does not produce ions in water, ethene does not conduct electricity in aqueous solutions. Ethene is a covalent molecule and has low melting point.


(b) The compound X is butane.


Balanced equation for combustion of butane:


2C4H10 + 13O2 8CO2 + 10H2O


Substitution reaction with Cl2 in the presence of sunlight:


C4H10 + Cl2 C4H9Cl + HCl


C4H9Cl + Cl2 C4H8Cl2 + HCl


The substitution reaction continues until all H is replaced by Cl.


(c) Vegetable oils contain unsaturated carbon chains whereas vegetable ghee contains saturated carbon chains which are said to be harmful to health.


Vegetable oils are converted into vegetable ghee by the process of hydrogenation in the presence of a catalyst like nickel.



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