Hi friend, you don’t need to worry. There are several books in the market available to practice engineering questions in GATE test. The main references included Civil Engineering: Objective Type for Degree Classes and for G.A.T.E., Civil Engineering (GATE Solved Papers), Microelectronic Circuits, Electronic Communication Systems and Engineering Electromagnetics (Hardcover). Apart from these books, I would suggest you to study the syllabus of text books consist with the subjects of Physics, Chemistry and Mathematics. You can do well in GATE test this year if you do thorough study of these references.