Books required in chemical technology branch ???
1. Mathematics - Higher Engineering mathematics by B. S. Grewal
2. Process Calculation - Chemical Process Principles Part-I by Hougen and Watson
3. Chemical Engineering Thermodynamics - I - Engineering thermodynamics by cengel and boles
4. Chemical Engineering Thermodynamics - II - Introduction to chemical engineering thermodynamics by smith
5. Fluid Mechanics and Heat Transfer - unit operations of chemical engineering by mccabe and smith
6. Mass Transfer - mass transfer operations by Treybal
7. Chemical Reaction Engineering - Chemical Reaction Engineering by levenspiel
8. Instrumentation and process control - Process System analysis and Control by coughanowr
9. Chemical Technology - Outlines of Chemical Technology by Dryden
10. Plant Economics and Design - Plant Design and Economics for Chemical Engineers by Timmerhaus
I hope these books will clear your concepts and help you in your preparation. All the best!