Objective Solving Tricks for GATE
Most of time students complain that they couldn't complete their objective paper; they were struck in one or another problem and wasted a lot of time. Some says that their guess went wrong and marks were deducted due to negative marking, some could not read paper completely and missed some easy questions etc.I'll  like to stress that objective paper solving is different from  subjective paper. You don't need to study extra for objective questions  but practice little bit.
Your  guess in solving objective can bring you in difficulty but some  intelligent/educated guess can add valuable marks to your score. Most of  time objective questions have some hint in the form of multiple choices  for the question.
Following can be used as guidelines for solving objective paper:
General Tips-:
Keep  the structure of GATE in mind(25 Quest 1 Mark each, 30 Quest. 2 Marks  each with 4 common data questions and 4 Linked Questions).
 Plan  your time. Allow more time for high point value questions; reserve time  at the end to review your work, and for emergencies. I'll suggest  following sequence, but you can keep as per your choice: 2 Marks  question, Common Data Questions, Linked questions and then single mark  questions.
Look  the whole test over, skimming the quesitons and developing a general  plan for your work. If any immediate thoughts come to you, jot them down  in the margin
Start  with the section of the test that will yield the most points, but begin  working with the easiest questions to gain time for the more difficult  ones and to warm up.
Work quickly, check your timing regularly, and adjust your speed when necessary.
Avoid  reading into the questions. When you find yourself thinking along the  lines of "this is too easy; there must be a trick..." mark the question  and move on to another.  Interpret questions literally.
Mark key words in every question. To help find the key words, ask yourself WHAT, WHO, WHERE, WHEN, and HOW? 
Source Info
www.onestopgate.com
