HSC Chemistry Book And Notes - HSC Chemistry Guide HSC Chemistry Notes is the notes of 11th and 12th class for HSC board exam help. Hope you like the app. If you like the app, please let us know your likes and dislikes by commenting with a 5-star rating. Thanks for being with us. The source of content : https://nctb.portal.gov.bd/ Disclaimer: The app does not represent a government or political entity. This app does not have any connection with the government in any way and it does not represent any government entity. The app is not an official app of any government/private entity. In the app information presented does not imply any affiliation to or endorsement by any entity. The material is only for educational purposes. Free books have been taken from the following website which are free to use and available in public domain to provide free education for students.