Greetings,

Krishna hereby I am mentioning the books from which you should study in order to score high. The mentioned books are best but you should choose any 2 of them as you have only couple of days so do not rush into things at the last moment and get confused . Select any book which you can get and is available and study efficiently. 

CHEMISTRY 

CONCEPT OF ORGANIC CHEMISTRY - OP FANDON 

PHYSICAL CHEMISTRY 

MS CHAUHAN FOR ORGANIC CHEMISTRY 

FOR INORGANIC CHEMISTRY 

NCERT 

OP FANDON 

MATHS 

RD SHARMA IIT-JEE ( VOLUME 1 AND VOLUME 2 )  

TATA MCGRAW HILL 

ARIHANT PUBLICATIONS JEE MAIN AND ADVANCED 

AMIT AGARWAL FOR INTEGRAL CALCULUS AND DIFFERENTIAL CALCULUS 

I hope this article might have helped . For further information do drop a comment or post another question.