What is the name of India's first privately developed fully cryogenic rocket engine?

Correct option is A

The correct answer is (a) Dhawan-1.

Solution:

• India's first privately developed fully cryogenic rocket engine is Dhawan-1.
• It was developed by the private aerospace company Skyroot Aerospace.
  
• It was fired in November 2021.
• Dhawan-1 has been named after the Indian Rocket Scientist Dr. Satish Dhawan.

Information Booster:

• Dhawan-1 runs on two high-performance rocket propellants — liquid natural gas (LNG) and liquid oxygen (LoX).
• Its engine was developed using 3D printing with a superalloy.
• Vikram-S is considered India's first privately developed launch vehicle,built and launched by the startup company Skyroot Aerospace on November 18, 2022.