Q3921. In the context of 18th-century Rajputana, the term ‘Bhai-bant’ refers to:
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9,654 RAS Prelims practice MCQs with the correct answer and a clear explanation for each. Filter by subject and chapter.
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Q3922. Match the items in List I with the items in List II to identify the correct scholarly contributions.
| Scientific Scholars | Notable Contributions or Texts |
|---|---|
| A. Sushruta | i. Rasa Ratnakara (Alchemy and Chemistry) |
| B. Charaka | ii. Brihat Samhita |
| C. Varahamihira | iii. Rhinoplasty and surgical instruments |
| D. Nagarjuna | iv. Foundational text on Ayurveda and internal medicine |
Explanation
Ancient Indian scholars contributed significantly to various scientific fields through their foundational texts. Sushruta is celebrated for his surgical expertise and instruments, while Charaka authored a major work on internal medicine. Varahamihira produced an encyclopedic text on astronomy and natural sciences, and Nagarjuna is historically linked to the study of alchemy and the properties of various metals.
Q3923. The residuary power of legislation vested in the Union Parliament explicitly includes the power to make laws imposing:
Explanation
Residuary powers granted to Parliament under Article 248 include the authority to impose any tax that is not specifically mentioned in either the State List or the Concurrent List. While taxes on agricultural income or alcoholic liquors are clearly assigned to states, the Union retains the right to create and levy new forms of taxation to meet evolving economic needs and challenges.
Q3924. Identify the odd one out among the following typical consequences of unchecked global warming.
Explanation
Global warming brings more extreme weather, shifts growing seasons and bleaches corals. It shrinks glaciers rather than expanding them in the mid-latitudes, so D is the odd one out.
Q3925. Read the following criteria used by the IUCN:
I. An observed, estimated, inferred or suspected population size reduction of 90% or more over the last 10 years.
II. Extent of occurrence estimated to be less than 100 square kilometres.
III. Population size estimated to number fewer than 250 mature individuals.
IV. Quantitative analysis showing the probability of extinction in the wild is at least 50% within 10 years.
V. Population size estimated to number fewer than 50 mature individuals.
Which combination of the above represents criteria that can independently classify a species as ‘Critically Endangered’ (CR)?
I. An observed, estimated, inferred or suspected population size reduction of 90% or more over the last 10 years.
II. Extent of occurrence estimated to be less than 100 square kilometres.
III. Population size estimated to number fewer than 250 mature individuals.
IV. Quantitative analysis showing the probability of extinction in the wild is at least 50% within 10 years.
V. Population size estimated to number fewer than 50 mature individuals.
Which combination of the above represents criteria that can independently classify a species as ‘Critically Endangered’ (CR)?
Explanation
A species is classified as Critically Endangered if it meets any of several quantitative criteria. These include a population reduction of ninety percent over ten years, a range smaller than one hundred square kilometers, a population of fewer than fifty mature individuals, or a fifty percent probability of extinction within a decade. Each of these parameters indicates an extremely high risk.
Q3926. Which notorious Pindari leader played a decisive and destructive role in the internal conflicts of Rajputana, particularly in the Krishna Kumari dispute, by acting as a mercenary?
Explanation
Amir Khan Pindari was a prominent mercenary leader who significantly influenced the internal conflicts of Rajputana. He played a destructive role in the Krishna Kumari dispute by serving various sides for financial gain. His involvement intensified the chaos in the region, eventually leading to his recognition as the ruler of the newly created state of Tonk by the British government in 1817.
Q3927. Identify the odd one out concerning the prominent centers of the Gandhara School of Art.
Explanation
The Gandhara school of art was localized in the northwestern region of the Indian subcontinent, with major centers at Taxila, Peshawar, and Bamiyan. These locations were heavily influenced by Greco-Roman aesthetic traditions. Sarnath, located in the east, was the center of a different sculptural school that emphasized indigenous styles and spiritual serenity during the later Gupta period.
Q3928. Match the federal countries in List-I with the location of their residuary powers in List-II:
| Federal Countries | Location of Residuary Powers |
|---|---|
| A. India | i. Vested in the Centre |
| B. United States of America | ii. Vested in the States |
| C. Canada | iii. Vested in the Provinces |
| D. Australia | iv. Vested in the States |
Explanation
The allocation of residuary powers varies among federal systems. In India and Canada, these powers are vested in the central government to ensure national strength. Conversely, in the United States and Australia, residuary powers are reserved for the states. This difference highlights the varying degrees of centralization intended by the framers of these constitutions to balance national and regional interests differently.
Q3929. Deforestation leads to an immediate increase in soil erosion primarily because:
Explanation
Trees play a vital role in stabilizing soil through their extensive root systems, which bind soil particles together. When forests are cleared, this physical support is lost, making the ground highly susceptible to erosion by wind and rain. Additionally, the removal of the canopy exposes the soil surface to direct impact from raindrops, further accelerating the degradation process.
Q3930. A wildlife biologist finds that a specific frog species has not been seen in its natural habitat for 60 years, despite exhaustive surveys. However, a small population survives in a research terrarium. Under which IUCN category should this species be listed?
Explanation
A taxon is categorized as Extinct in the Wild when it is known only to survive in cultivation, in captivity, or as a naturalized population well outside its past range. Since the frog species has not been observed in its natural environment for sixty years but still persists in a research terrarium, it fits this specific conservation status precisely and accurately.Answer key for these questions
| Q | Correct answer |
|---|---|
| 3921 | (d) Traditional division of conquered lands among clan brethren |
| 3922 | (a) A-iii, B-iv, C-ii, D-i |
| 3923 | (d) Any tax omitted from the State or Concurrent Lists. |
| 3924 | (d) Expansion of glacial mass in the mid- latitudes |
| 3925 | (d) I, II, III, IV and V |
| 3926 | (a) Amir Khan |
| 3927 | (a) Sarnath |
| 3928 | (a) A-i, B-ii, C-i, D-ii |
| 3929 | (a) Loss of root systems removes the soil’s structural binding, increasing wind and water vulnerability. |
| 3930 | (a) Extinct in the Wild |
Frequently asked questions
How many RAS Prelims practice MCQs are there on RAS Prelims?
This page has 9654 practice MCQs on the RAS Prelims syllabus. Each has the correct answer, and most have an explanation.
How should I practise MCQs for RAS Prelims?
Attempt each question first, then open the answer and read the explanation. Practise one chapter at a time, note the facts you got wrong and revise them. Repeat the chapter after a few days.
Are these actual RAS Prelims past-paper questions?
No. These are practice questions written for the RAS Prelims syllabus. They follow the pattern the exam uses: factual questions, statement-based questions, match-the-list and assertion-reason.