I am studying in B.E. civil in govt. college in gujarat.Should I prefer continue my study and do M.E. in IIT or do B.Tech. in civil-construction fron CEPT uni.,Ahmedabad (by dropping a year)?????

if you are planning to go for higher education like ME or MTech or PhD from IITs then why wasting one year in dropping. Do as best as you can in BE and then go for gate to get admission in Mtech in IITs.

After 6 years you may have either Mtech from IIT or B tech from CEPT +1 year job or anyother thing

weigh your options

i would suggest keep doing BE , perform well and clear gate as and when required to get Mtech from IITs