• Rope

• Office File
• Arc File
• File Tag

• Sampling
• Chemical analysis

• A Textbook Of Physical Chemistry
• Author: A. S. Negi And S.C. Anand
• 3rd Edition 2023
• Paperback

This textbook has been written to appeal to A-level chemistry students. It covers the syllabuses of all the main examining boards offering A-level chemistry and also contains some material suitable for S-level students. The author places the subject in context by discussing the nature and, where relevant, the economics of the chemical industry and the wider social implications and applications of chemistry.

• Advanced principles of virology
• Razia Siddiqui