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UPSC 2015: In which of the following activities are Indian Remote Sensing (IRS) satellites used? 1. Assessment of crop productivity 2. Locating groundwater resources 3. Mineral exploration 4. Telecommunications 5. Traffic studies
(a)1, 2 and 3 only
(b)4 and 5 only
(c)1 and 2 only
(d)1, 2, 3, 4 and 5
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Not attemptedCorrect Answer: (a) 1, 2 and 3 only
Indian Remote Sensing (IRS) satellites supply multispectral images that are routinely used for estimating crop productivity, locating groundwater prospects and carrying out mineral exploration, but they are not communication satellites (telecommunication is handled by INSAT/GSAT), and the 2015 official key did not treat traffic/route studies as a core IRS application. ([upscprep.com](https://www.upscprep.com/upsc-prelims-2015-question-paper-and-answer-key/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2015 Science & Technology question?▼
The correct answer is option (a): 1, 2 and 3 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Space Technology & Astronomy question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2015, GS Paper 1, as Question 71. It falls under Science & Technology > Space Technology & Astronomy.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Space Technology & Astronomy?▼
UPSC has asked 69 questions from Space Technology & Astronomy (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.