Daily Quiz-271

1. Which of the following ISRO instruments is most similar in principle to CHACE-2?

A. TMC-2 (Terrain Mapping Camera-2)

B. MIP (Moon Impact Probe)

C. MENCA on Mars Orbiter Mission

D. Chandrayaan-3 Pragyan Rover APXS

2. The data from CHACE-2 are useful for future lunar bases because they:

A. Identify regolith mineral deposits

B. Predict radiation shield requirements

C. Characterize ambient gas composition and potential contaminants for habitation

D. Map gravitational anomalies

3. Which launch vehicle carried CHACE-2 into lunar orbit?

A. PSLV-C11

B. GSLV Mk-II

C. GSLV Mk-III M1

D. LVM3-M4

4. CHACE-2’s findings about a tenfold increase in neutral atoms validated which theoretical prediction?

A. Tidal wave theory

B. Magnetospheric compression model

C. Solar wind–exosphere coupling model

D. Cosmic ray absorption model

5. Which of the following is a limitation of CHACE-2?

A. Cannot operate on lunar nights

B. Measures only charged particles

C. Limited spatial resolution due to orbiter altitude

D. Inability to detect isotopic ratios

Answers Quiz- 270 (Nov 5)

1. D

Explanation: CHACE-2 was designed and developed by SPL, part of the Vikram Sarabhai Space Centre (VSSC).

2. A

Explanation: CHACE-2 improves sensitivity, extends detection up to 300 amu, and provides better isotopic resolution.

3. B

Explanation: Argon-40 arises from radioactive decay of K-40; its distribution reveals subsurface radiogenic processes.

4. B

Explanation: The payload links solar flares, CMEs, and particle fluxes to dynamic responses in the lunar exosphere.

5. B

Explanation: The May 2024 CME event provided the first confirmed observational evidence for predicted pressure rise.