The White Tiger

The White Tiger:

The White Tiger is the story of Balram Halwai’s life as a self-declared “self-made entrepreneur”: a rickshaw driver’s son who skillfully climbs India’s social ladder to become a chauffer and later a successful businessman. Balram recounts his life story in a letter to visiting Chinese official Premier Wen Jiabao, with the goal of educating the premier about entrepreneurship in India.

1:We cannot say that this novel represents real India throughout the narration of nation. Because Arvind Adiga himself uses this words “Half Baked” Indians, means what he takes about is story of half people not about all. 

“Me, and thousands of others in this country like me, are half-baked, because we were never allowed to complete our schooling. Open our skulls, look in with a penlight, and you'll find an odd museum of ideas: sentences of history or mathematics remembered from school textbooks (no boy remembers his schooling like the one who was taken out of school, let me assure you), sentences about politics read in a newspaper while waiting for someone to come to an office, triangles and pyramids seen on the torn pages of the old geometry textbooks which every tea shop in this country uses to wrap its snacks in, bits of All India Radio news bulletins, things that drop into your mind, like lizards from the ceiling, in the half hour before falling asleep--all these ideas, half formed and half digested and half correct, mix up with other half-cooked ideas in your head, and I guess these half-formed ideas bugger one another, and make more half-formed ideas, and this is what you act on and live with.” 
― Aravind Adiga, The White Tiger

2. Archetypes means a very typical example of a certain person or thing.  So, based on this yes we can say that this is an archetype of all stories of 'rags to riches'. We can take example of Slumdog Millionaire. 
In this movie we can also find this kind of similar story of rag to riches. Because in India it’s a dream of every one to get success by hook or crook. If we look at the text from that point of view then yes defiantly this story is an archetype of all stories of 'rags to riches'.

3. Yes, there are possibilities of deconstruction of the novel The White Tiger. Balram says that he falls under the category of ‘Half-Backed Indians’ who don’t know much about the reality. They are aware about the reality but which is still not the fully truth. We can focus on this particular word and then can change our view point and can do deconstruction of the novel. And because Balram is Half –backed Indian we can fully relay on his point of view.