9,654 RAS Prelims practice MCQs with the correct answer and a clear explanation for each. Filter by subject and chapter.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
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RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1351. Given below are two statements regarding quantum communication. Statement I: Quantum cryptography relies on the principles of quantum mechanics to secure data. Statement II: The fundamental property used in Quantum Key Distribution (QKD) is that observing or measuring a quantum state alters it, thus revealing any eavesdropping attempts. Which of the above statement(s) is/are correct?
Explanation
Quantum cryptography uses the laws of physics to provide exceptionally secure data transmission. A key method is Quantum Key Distribution, which relies on the fact that any attempt to observe or measure a quantum state will fundamentally alter it. This ensures that any eavesdropping is immediately detected, providing a level of security that is theoretically impossible to.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1352. Which of the following correctly describes a practical application of IoT and AR combined in industrial maintenance?
Explanation
Combining IoT and AR in industrial settings can significantly improve maintenance and efficiency. For example, a technician wearing smart glasses can see real-time data from IoT sensors overlaid directly onto the machinery they are repairing. This "heads-up" display provides vital information and instructions without the technician needing to look away from their work, reducing errors.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1353. Which of the following is NOT a typical feature or requirement for experiencing true Virtual Reality (VR)?
Explanation
True Virtual Reality requires a head-mounted display and motion tracking sensors to create a fully immersive 360-degree digital environment. This immersive experience is achieved by completely blocking out the user’s view of the physical real-world surroundings and replacing it with computer-generated visuals. If a user can still see the physical world clearly, it is not.
RAS PrelimsScience and Technology · Computers, Information and Communication Technology
Q1354. What is a highly anticipated effect of mature quantum computing on current global cybersecurity infrastructure?
Explanation
Mature quantum computing is expected to have a profound effect on global cybersecurity because its immense processing power could easily break the mathematical problems that protect current asymmetric encryption standards. This would make many existing security protocols obsolete, requiring the development and implementation of new, quantum-resistant cryptographic methods to protect sensitive data and.
RAS PrelimsRajasthan History, Art and Culture · Ancient Rajasthan: Society and Culture
Q1355. In the context of ancient Rajasthan, which of the following best describes the social structure evident in the early Vedic period regarding the Matsya Janapada?
Explanation
During the early Vedic period in ancient Rajasthan, the social structure in regions like the Matsya Janapada was characterized by a flexible varna system. Individuals were categorized based on their functional roles and occupations rather than strict lineage. This allowed for social mobility before the system solidified into the more rigid, birth-based caste hierarchy of later historical periods.
RAS PrelimsAncient Indian History · Religious Movements of the 6th Century BC
Q1356. Which of the following factors primarily contributed to the emergence of heterodox religious movements in the 6th century BC?
Explanation
The 6th century BC witnessed a shift toward heterodox sects like Buddhism and Jainism. This was primarily driven by the increasing rigidity of the Varna system, which limited social mobility. Furthermore, the expensive and ritualistic Vedic animal sacrifices posed a significant economic burden on the growing agrarian society that relied heavily on cattle for plowing and production.
RAS PrelimsIndian Polity and Governance · DPSP and Fundamental Duties
Q1357. What is the fundamental nature of the Directive Principles of State Policy as enshrined in the Constitution of India?
Explanation
These principles represent the aspirations of the people and are considered fundamental in the governance of the country. Although they are not legally enforceable by any court, Article thirty-seven clearly states that it is the duty of the state to apply these principles when enacting laws to achieve social and economic democracy for everyone in the nation.
RAS PrelimsWorld Geography · Natural Vegetation and Biomes
Q1358. Which of the following provides the most accurate definition of a biome?
Explanation
A biome represents a large-scale biological community that is fundamentally shaped by the regional climate, particularly temperature and precipitation patterns. It encompasses diverse ecosystems within a specific geographic area that share similar environmental conditions. This classification focuses on the dominant vegetation and adapted animal life, providing a broad framework for understanding the global distribution of life on Earth.
RAS PrelimsIndian Economy · Monetary and Fiscal Policy, Union Budget and Resource Mobilisation
Q1359. Which of the following best defines Monetary Policy in the Indian context?
Explanation
Monetary policy represents the strategic framework implemented by the Reserve Bank of India to regulate the quantity of money circulating in the economy. It focuses on controlling interest rates and managing credit availability to achieve macroeconomic goals. By influencing the cost of borrowing, the central bank aims to balance price stability and sustainable economic growth effectively within the nation.
RAS PrelimsScience and Technology · Defence and Space Technology in India
Q1360. The Defence Research and Development Organisation (DRDO) was established in which of the following years by amalgamating existing scientific establishments of the Indian military?
Explanation
The Defence Research and Development Organisation was formed in 1958 through the merger of several existing technical entities. This amalgamation integrated the Technical Development Establishment and the Directorate of Technical Development and Production with the Defence Science Organisation. Its primary purpose is to enhance self-reliance in Indian military technology through indigenous scientific research and development.
Answer key for these questions
Q
Correct answer
1351
(a) Both Statement I and II are correct
1352
(b) Smart glass sensor overlays
1353
(d) Complete sensory visibility of the physical real-world environment
1354
(a) Asymmetric encryption obsolescence
1355
(b) A varna system primarily based on occupation and function rather than rigid birthright
1356
(b) The rigidification of the Varna system and the economic burden of Vedic animal sacrifices
1357
(b) Non-justiciable but fundamental in the governance of the country
1358
(b) A major biotic community of regional flora and fauna primarily categorized by its dominant climate
1359
(b) Central bank’s macroeconomic policy for money supply and rates
1360
(c) 1958
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.
