Quick Quiz Actions

Generate Quiz

Create a custom practice set

Pick category, difficulty, number of questions, and time limit. Start instantly with your own quiz.

Generate Quiz

Weekly Quiz

Weekly challenge coming soon

No weekly quiz is published yet. Check the weekly page for the latest updates.

View Weekly Page

space medium MCQ

GRACE-FO mission measures temporal gravity field variations to track groundwater depletion and ice mass loss.

True - twin satellites ranging via microwave/laser
False - measures magnetic field
True - single satellite radar
False - optical imaging only

Answer: True - twin satellites ranging via microwave/laser

GRACE Follow-On (2018-) detects mass redistribution via intersatellite distance changes; laser ranging interferometer enhances precision over original GRACE.

Topic Space Missions - Earth Science

Exam Relevance UPSC Prelims, SSC CGL

More space Questions Back to all questions