Yaa you can absolutely become if you have enough support and money power to do so

Yes why not, engineering is that type of field which offers you to go anywhere in any field expect Medical.
In our real life Arvind Kejeriwal is the biggest example...as we all know that he's the alumni of IIT kharagpur
Good Luck!

You can become anything if your talented and hardworking .... You can become MLA do check the eligibility criteria for becoming MLA and also check the age limit

Yes obviously  you can.You can become MLA after a age .A minimum age condition is there.

Yes you can certainly  become MLA if you wish to, it's completely your choice to go for futher studies, job , or choosing politics. There are no such restrictions that engineering student can't choose political carrier.