These degree has 5 years duration alike b.tech degree which is a 4 year program. After completion of the course you will receive two degrees one of b.tech and another for M.tech if you would like to separately do m.tech and b.tech it takes 4 year to complete b.tech and another 2 year for M.tech that too if you cleared GATE in one attempt (if you are aiming for a reputed college for masters)

You get both your bachelors and masters degree. For example in engineering you get B.Tech and M.Tech