12th New Study Materials (As Per New Book 2019-2019):
- 12th Chemistry - Unit 7 Study Material | Mr. S. Vishnusankar - English Medium Download Here
Prepared by
S.VISHNU SANKAR ,M.Sc.,MPhil.,B.Ed,
P.G.ASST IN CHEMISTRY
E.M.GOVT .HR SEC SCHOOL
PANPOLI-TENKASI (DIST)
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