According to you,how much hours should one give on studying a chapter of chemistry

dear grishma 
we have already answered the question in the previous post , 
it depends on chapter , so, kindly let me know in which chapter you are facing difficulties , so, that i can able to provide help . 
all the best 
REGARDS 

i think this will depend on you , that  in how much time you can finish the chapter , after finish one time is not important , you need to keepon revising those chapter , study from NCERT book, 

hope this will clear your doubt 

good luck