Which book is best for jee preparations in mathematics and chemistry

HEY DEAR

NCERT MATHS + R.D. SHARMA IS THE BEST COMBINATION TO SCORE GOOD MARKS IN IIT JEE MATHS AT BOTH MAINS AND ADVANCE LEVEL EXAM.

FOR CHEMISTRY YOU CAN USE COMBINATION OF NCERT TEXTBOOK+ OP TANDON ORGANIC CHEMISTRY AND P BAHADUR PHYSICAL CHEMISTRY

THAT WILL BE ENOUGH TO SCORE GOOD MARKS IN JEE MAINS AND ADVANCE

WISHING YOU ALL THE BEST

SAHIL:}

dear nayansh 
for maths u can refer to iit mathematics by m l khanna , they have ample amount of questions to practice . 
and as far as chemistry is concerned , 
FOR ORGANIC TAKE BESIC PRINCIPLE OF ORGANIC CHEMISTRY BY MORRISION AND BOYD . 
PHYSICAL CHEMI – P BAHADUR 
INORGANIC CHEMI – GRB PUBLICATION BOOKS . 
hope it clears 
regards