Dear Student,

Greetings.

Different experts will have different views about this question. But as per my point of view, to study in the early morning will be the best time. Because it is the only time when mind is fresh and stress free mind is the only state of mind when adaption quality is at the highest level. Everything you read, will be easily understood by you and you can have proper revision on the topics too. Rest, it depends on your dedication.

Chemistry is generally considered scoring Subest but when You make proper planning to study it well,First make short notes (very short) on important formula and reaction and Mechanisms, then revice them once daily in the night. For practice in Physical choose a time when Your brain is most active preferably in the evening and take some break don't study constantly. For Organic go with Mechanism and remember those and Use them to solve differnt kind of Priblems.