which book is helpful for chemistry in neet cracking 2020...?

Dear Shivam, hope this helps:

Syllabus for Chemistry Includes:

Some Basic Concepts of Chemistry
Structure of Atom
Classification of Elements and Periodicity in Properties
Chemical Bonding and Molecular Structure
State of Matter: Gases and Liquids
Thermodynamics
Equilibrium
Hydrogen
S-block Element
Some p-block Elements
Organic Chemistry
Hydrocarbons
Environmental Chemistry
Solutions
Chemical Kinetics
Surface Chemistry
General Principles and Processes of Isolation of Elements
D and F Block Elements
Coordination Compounds
Haloalkanes and Haloarenes
Organic Compounds Containing Nitrogen
Biomolecules, Polymers and Chemistry in Everyday life


Chemistry Best Books:

NCERT Chemistry textbooks for Class XI and XII
Physical Chemistry by OP Tandon
ABC of Chemistry for Classes 11 and 12 by Modern
Concise Inorganic Chemistry by JD Lee
Dinesh Chemistry Guide
Practise books by VK Jaiswal, MS Chauhan and N Awasthi

Preparation tips:

Chemistry is divided into Inorganic, Physical and Organic chemistry. For inorganic chemistry, you must refer to the NCERT. Organic comprises of many reactions and reagents which can be practised by writing over and over again. Physical chemistry requires a comparatively deeper understanding of concepts, so preparing with the NCERT and referring to study material a level higher than NCERT should be the way to go. For more information, please visit our page at:
https://medicine.careers360.com/articles/how-prepare-for-neet-chemistry

Hello Shivam !! I suggest you best books for chemistry areNCERT of class 11 and 12th standard.These NCERT books consists of basic concepts  for each section.And other that helps you are Dinesh chemistry guide,physical chemistry by OP tandon..these books helps you to crack neet exam.To get more information about neet sources you just go through the link provided below.

https://medicine.careers360.com/articles/best-books-for-neet

GOOD LUCK!!