what should be the order of revision of chapters for bitsat?

BITSAT is not an different  than AIEEE.prepare for AIEEE and go for the books which are used in objective exam preparation,at this time go for ARIHANT BITSAT book......and also solve mock test of BITSAT

for physics: Ladiwala, Hc verma objectives, AArihant

for maths : ML khanna and arihant are suffiecient

Prepare only from the syllabus given in the brochure.

Most of the time students try to read the same topic from different books and wont be able to complete the syllabus.Prepare from one of the good books like Arrihant etc for problems but for theory preparing from NCERT books will help you score more.In short study from your NCERT text books.

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regards
Ramesh