Group of all the Chemical Engineering Courses, listed as below: 
(these have crisp notes on essential topics, video lectures on theory and problem solving, topic-wise and keywords-wise tests; almost all the questions with solutions of GATE-CH 1988 to 2025). Questions are from variety of sources and predominantly from GATE.
  1. Process Calculations (Rs. 1,200)
  2. Thermodynamics (Rs. 1,400) 
  3. Fluid Mechanics (Rs. 1,200)
  4. Mechanical Operations (Rs. 400)
  5. Heat Transfer (Rs. 1,200)
  6. Mass Transfer (Rs. 1,200)
  7. Reaction Engineering (Rs. 1,300)
  8. Process Control (Rs. 1,200)
  9. Process Economics (Rs. 600)
  10. Process Equipment Design (Rs. 400)
  11. Chemical Technology (Rs. 400)
  12. Mathematics (Rs. 400)
  13. GATE-CH 
  14. ChE-Tests Bundle 
All the above Chemical Engineering courses are available as a single-bundle for 6 months (Rs. 10,900 7,470)

Price in Indian Rupees:  7,470 (6-months access from the date of purchase)
Renewal discount for next 6 months, for the existing and past users: 30%

Renewal for 1 month is available at Rs. 2,670