Q. Dhawan-I and Dhawan-II are often seen in news, these are:
Answer: Cryogenic engines
Notes: Dhawan-I and Dhawan-II are cryogenic engines that have been in the news. The Dhawan-I was India's first privately developed cryogenic engine. It runs on liquefied natural gas (LNG) and liquid oxygen (LOX). The Dhawan-II is a 3D-printed cryogenic engine that was developed by the Indian company Skyroot Aerospace. The Dhawan-II was test-fired for a record 200 seconds. It will be used as the upper stage of the updated version of the Vikram-2.