When propene is heated with chlorine at 773K, the product is substituted and not addition in nature, explain.

When propene is chlorinated at 773 K, the product is :

What happens when propene is treated with chlorine at 773 K?

When propene is treated with chlorine at 500^(@) C, allyl chlroide is formed as the main product. The mechanism of the reaction is:

Whether 'Gammxine 'is the product of substitution or addition reaction of benzene ?