UPSC CSE Prelims
Question 25
Which of the following pairs is/are correctly matched?
| Spacecraft | Purpose |
|---|---|
| 1. Cassini-Huygens | Orbiting the Venus and transmitting data to the Earth |
| 2. Messenger | Mapping and investigating the Mercury |
| 3. Voyager 1 and 2 | Exploring the outer solar system |
Select the correct answer using the code given below.
View correct answer and explanation
Correct answer: B
Correct Option: B
Explanation: MESSENGER explored Mercury and Voyager 1/2 explored the outer planets and beyond; Cassini–Huygens was a Saturn mission.
Statement/Pair-wise Analysis:
Pair 1: Incorrect - Cassini orbited Saturn and Huygens descended to Titan; it was not a Venus orbiter.
Pair 2: Correct - MESSENGER mapped and studied Mercury.
Pair 3: Correct - Voyager 1 and 2 studied the outer solar system.
Option-wise Analysis:
A: Incorrect - includes incorrect pair 1; omits correct pairs 2, 3.
B: Correct - includes all and only the correct items.
C: Incorrect - includes incorrect pair 1; omits correct pair 2.
D: Incorrect - includes incorrect pair 1.