Getting worried is not a solution. You just have to get up, make up your mind and start studying hard. You need to see the previous years placement test papers for the company which is coming to your campus for recruitment. Focus your efforts on the written exam first because that is the initial part of the whole process. If you clear the written test, you have a lot of chances of making it in the GD round and the interviews.
After you are sure that you can clear the written part, you should start focusing on the GD and interview part. You can't guess the topic of the Group discussion. So you must just pick up any current affairs topic and start practising with your friends. Just try to improve your English speaking ability.
Especially in India, the English language is a must for getting a good job in an IT, BPO or software company like Infosys, Wipro, TCS, IBM India, Hp, Dell call center, Satyam computers or international call centers. Getting comfortable with English requires you to practise speaking English with your friends, relatives and others for a lot of time. Regarding the interviews you need to master the important placement paper interview questions asked by that company before. You can read the HR and technical interview questions and learn them. You should sound quite natural while answering the HR Interview questions.
Just stay confident and have a pleasant smile on your face. In the technical interview do not try to answer the question if you do not have much knowledge about it. You can be asked questions like If you are in some difficult situation how will you manage it? You may be given a particular programming situation and asked to solve the problem. In that situation you do not have to start writing the whole code and plan for the situation. Just demonstrate your commitment to the problem and the situation. Tell about the approach you will adopt to solve the problem and the basic steps you will take to tide over the problem in case of a programming question.
This is how you should answer the complex interview question. Such questions help the interviewer to assess the candidate's problem solving skills better. So you need to watch out such interview questions in the latest placement papers . So do not worry about your employment test. Your hard work and abilities will surely benefit you. Dont lose your heart - You will surely win!
Whole Exam - Job Test Paper Questions and Latest Placement Papers