Q551. Identify the odd one out among the following regions/annexes regarding the implementation focus of the UNCCD.
World Geography: RAS Prelims MCQs
553 RAS Prelims practice MCQs on world geography are on this page, in 7 chapters. They cover physical landforms, major rivers and lakes, natural vegetation and biomes, world agriculture, industrial regions, the transport network and the main environmental issues: desertification, deforestation, climate change and ozone depletion. Each question has an answer and an explanation, in the formats the exam uses.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
Showing 551–553 of 553 questions
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Q552. Consider the following statements regarding the structure and function of the ozone layer:
I. It absorbs 97-99% of the Sun’s medium-frequency ultraviolet light (UV-B).
II. Without the ozone layer, UV radiation would cause widespread genetic damage to living organisms.
III. The concentration of ozone in the stratosphere is uniform and constant throughout the year at all latitudes.
IV. Ozone molecules in the stratosphere undergo a continuous cycle of creation and destruction.
Which of the above statement(s) is/are correct?
I. It absorbs 97-99% of the Sun’s medium-frequency ultraviolet light (UV-B).
II. Without the ozone layer, UV radiation would cause widespread genetic damage to living organisms.
III. The concentration of ozone in the stratosphere is uniform and constant throughout the year at all latitudes.
IV. Ozone molecules in the stratosphere undergo a continuous cycle of creation and destruction.
Which of the above statement(s) is/are correct?
Explanation
The stratospheric ozone layer is vital for protecting life by absorbing most harmful UV-B radiation. This prevents genetic damage and other health issues in organisms. Ozone levels are not uniform; they vary by latitude and season due to atmospheric circulation and chemical cycles.
Q553. Approximately what percentage of the world’s remaining tropical rainforests is contained within the Amazon Basin?
Explanation
About half of the world’s remaining tropical rainforest lies in the Amazon Basin, which is why its loss is so important for the global climate.Answer key for these questions
| Q | Correct answer |
|---|---|
| 551 | (a) Antarctica |
| 552 | (b) I, II and IV |
| 553 | (c) 50% |
Key facts from World Geography
- The RPSC syllabus for world geography lists mountains, plateaus, plains and deserts, major rivers and lakes, natural vegetation, agriculture, industrial regions, transport and environmental issues.
- Questions ask for the location of a feature: where a range lies, where a river ends, which country has an industrial region.
- Statement and sequence questions are common, for example the order of mountain ranges or of vegetation layers.
- Environmental issues are asked through treaties and dates, such as the Montreal Protocol, the IPCC and the Paris Agreement.
- Indian and Rajasthan geography are on their own pages, each with its own chapters.
Frequently asked questions
How many RAS Prelims practice MCQs are there on World Geography?
This page has 553 practice MCQs on World Geography. Each has the correct answer, and most have an explanation.
Which chapters does the world geography set cover?
Seven chapters: physical landforms (mountains, plateaus, plains and deserts), major rivers and lakes, natural vegetation and biomes, world agriculture, major industrial regions, the world transport network, and environmental issues including desertification, deforestation, climate change and ozone depletion.
Is world geography part of the RAS Prelims syllabus?
Yes. The RPSC syllabus has a Geography of World and India section that lists physical aspects, rivers and lakes, natural vegetation, agriculture, industrial regions, transport and environmental issues for the world, followed by India and Rajasthan.
How can I revise world geography quickly?
Use an atlas alongside the questions. Attempt each chapter, read the explanation for every miss and mark the place on the map. Make short lists of ranges, rivers and industrial regions with their countries, and revise them over several days.