How do I score 70 to 80 - in BSc 1st year?

To get 70 to 80%, simple every day go with the 1 concept from each subject. Then try to figure out the difficult part which you found in that concept. Next prepare NOTES on your own. This will gives you the Result as you Expect.

To answer it in one word I would say - Study! 70% to 80% marks are not to hard to score in Science examination, if you have clarity of ideas in your mind. You must be regular in attending the classes and carefully listen to your lecturer. Since your target is clear from the very beginning that you want to score marks you can be mature enough to ask your friends to talk to you later in the breaks. That will save you from missing loads of back benchers fun. The reality is it might take guts to be a backbencher. Everybody cannot pull a night off and score wonderful marks. The key to your scoring success lies in writing your notes down with your own hands. There are countless benefits of writing your notes in your handwriting without using any new technology of note making. Some of them involve - You learn your notes half way writing them, your concepts get clear while jotting them down. Your notes act as a really handy tool at the last minute preparation. Like when you wake up before the exam and you have to study and revise each and everything your note will be your savior at that moment. Note making might be a lengthy time taking process, but you are saving a lot of your future time!

One of the most important things in any exam is understanding the mentality of the examiner. This is true that the answer lies in the question itself. So solve the past year question at least two times before the exam and practice long answer writing daily. Make it a thing to do before sleeping. During the exam, attend the lengthy questions first because they carry more marks and bring you in your flow of examination. Attend hundred percent paper even if you don't know a single word about the question. A written sheet is worth more marks than a blank one.

At the end of the day consider it as your exam and not your whole life. Don't panic and eat a chocolate or a sweet before the exam, it releases feel good hormones in your body!

P.S. Best of Luck. Practice the above steps religiously and happy exams are guaranteed!