In the context of the recent launch of the Rohini-200 Sounding Rocket, consider the following statements:1. RH-200 is a two-stage rocket capable of climbing to a height of 70 km bearing scientific payloads.2. The ‘200’ in the name denotes the length of the rocket in mm.3. The first and second stages of RH-200 are powered by solid motors.Which of the statements given above is/are correct?

[A] 1 and 2 only

[B] 2 and 3 only

[C] 1 and 3 only

[D] 1, 2, and 3

Answer: C

Notes:

Explanation:

The 3.5-metre-tall RH-200, a trusted member of the Rohini sounding rocket family used by the ISRO for atmospheric studies, has completed 198 consecutive successful flights, according to the Vikram Sarabhai Space Centre (VSSC), Thumba.
RH-200 is a two-stage rocket capable of climbing to a height of 70 km bearing scientific payloads.
The first and second stages of RH-200 are powered by solid motors. The ‘200’ in the name denotes the Diameter of the rocket in mm.
Other operational Rohini variants are RH-300 Mk-II and RH-560 Mk-III.
Sounding rockets have an important place in the ISRO story. The first sounding rocket to be launched from Thumba was the American Nike-Apache – on November 21, 1963.
After that, two-stage rockets imported from Russia (M-100) and France (Centaure) were flown. The ISRO launched its own version – Rohini RH-75 – in 1967.
The sounding rocket programme “was indeed the bedrock on which the edifice of launch vehicle technology was built”.
Today, these small rockets are launched both from the Thumba Equatorial Rocket Launching Station (TERLS) and the Satish Dhawan Space Centre, Sriharikota.

Source: The Hindu