Hello Shubha,

See, securing hundred plus in need is a big deal for chemistry any other subject especially if you are beginning from scratch. Don't say hard thing to get to high score of hundred Plus but following the following points will definitely give a boost in your scores. And every mark is important. 

• you should ensure that all your basic concepts are clear.
• Also along with that work upon your accuracy and speed.
• It is important that your basics of all the topics are clear and that you can tackle easy to moderate level problems in less than 3 minutes.
• Sometimes, easier questions can be solved in seconds, giving you more time for difficult questions or topics which you didn’t prepare that well.
• Prepare a timetable allotting time to all the subjects.
• Do not invest excessive time to any subject

Following the list of best books for Chemistry preparation for neet:

• NCERT Chemistry
• Physical Chemistry by O.P. Tandon
• Organic Chemistry by Morrison and Boyd for Organic Chemistry
• Modern’s ABC of Chemistry for class 11th and 12th
• Concise Inorganic Chemistry by J. D. Lee for Inorganic Chemistry
• Dinesh Chemistry

At the end again it is possible to score good corporate strategy and planning. Keep your goals clear. 

I hope this information is helpful. All the best.