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 PrelimsModern Indian History · Science and Technology in Independent India
Q9501. Match the following major laboratories of the Defence Research and Development Organisation (DRDO) in List I with their respective locations in List II.
DRDO Laboratory
Location
A. Aeronautical Development Establishment (ADE)
i. Pune
B. Armament Research and Development Establishment (ARDE)
ii. Bengaluru
C. Defence Laboratory (DLJ)
iii. Delhi
D. Laser Science and Technology Centre (LASTEC)
iv. Jodhpur
Explanation
DRDO operates a network of specialized laboratories across India. The Aeronautical Development Establishment is located in Bengaluru, focusing on flight technologies. The Armament Research and Development Establishment is based in Pune. The Defence Laboratory is situated in Jodhpur, while the Laser Science and Technology Centre operates in Delhi. These facilities work on different aspects of military hardware and strategic technological research.
RAS PrelimsRajasthan Geography · Population of Rajasthan: Growth, Density, Literacy and Sex Ratio
Q9502. Find the odd one out among the following districts concerning their total population exceeding 30 lakhs in 2011:
Explanation
According to the 2011 Census, several major districts in Rajasthan, such as Jaipur, Jodhpur, and Alwar, have total populations exceeding thirty lakh residents. However, Jaisalmer is the least populous district in the state, with its total population falling well below the ten-lakh mark. This significant difference highlights the uneven distribution of residents across the state’s vastly different geographical and climatic regions.
RAS PrelimsModern Indian History · Science and Technology in Independent India
Q9503. The Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk III), which successfully launched the Chandrayaan-2 and Chandrayaan-3 missions, has been officially renamed by ISRO as:
Explanation
The Geosynchronous Satellite Launch Vehicle Mark III is India’s most powerful launch vehicle, capable of carrying heavy payloads into orbit. It played a critical role in major lunar exploration missions, including Chandrayaan-2 and Chandrayaan-3. ISRO has officially renamed this heavy-lift rocket as LVM3 to reflect its mission capabilities more accurately as a versatile launch system for various orbital requirements.
RAS PrelimsRajasthan Geography · Population of Rajasthan: Growth, Density, Literacy and Sex Ratio
Q9504. The rapidly declining child sex ratio in traditionally prosperous and highly literate districts like Jhunjhunu and Sikar is most commonly attributed to:
Explanation
The decline in the child sex ratio in prosperous districts like Jhunjhunu is largely due to social and technological factors. Despite high literacy, a strong traditional preference for male children persists. When combined with the illegal use of modern medical technologies for gender selection and subsequent abortions, this leads to a skewed ratio. This phenomenon shows that economic prosperity does not always guarantee gender equality.
RAS PrelimsModern Indian History · Science and Technology in Independent India
Q9505. Which of the following statements regarding the administration of the Department of Space (DOS) in India is incorrect?
Explanation
The Department of Space in India has a unique administrative structure designed to ensure direct executive oversight. It reports directly to the Prime Minister, rather than being part of the Ministry of Science and Technology. The Space Commission provides policy guidance, while ISRO serves as the research arm. This arrangement facilitates rapid decision-making and strategic planning for the country’s space programme.
RAS PrelimsRajasthan Geography · Population of Rajasthan: Growth, Density, Literacy and Sex Ratio
Q9506. Given below are two statements: Statement I: Ganganagar has the highest percentage of Scheduled Caste population in Rajasthan. Statement II: Dungarpur has the lowest percentage of Scheduled Caste population in the state. Which of the following is correct?
Explanation
The distribution of Scheduled Castes in Rajasthan shows significant regional variation. Ganganagar district, located in the north, has the highest percentage of Scheduled Caste residents in the state. In contrast, Dungarpur, situated in the southern tribal region, has the lowest percentage of this group. These geographic patterns are important for understanding the demographic landscape and tailoring social welfare programs to specific needs.
RAS PrelimsModern Indian History · Science and Technology in Independent India
Q9507. Consider the following statements regarding the contributions of Homi J. Bhabha: I. He was the founding director of the Tata Institute of Fundamental Research (TIFR). II. He served as the first Chairman of the Atomic Energy Commission of India. III. He was awarded the Nobel Prize in Physics for his work on the cosmic ray cascade process. Which of the above statement(s) is/are correct?
Explanation
Homi J. Bhabha was a central figure in Indian science, founding the Tata Institute of Fundamental Research and serving as the first Chairman of the Atomic Energy Commission. While his theoretical work in physics was internationally acclaimed and led to nominations, he did not receive the Nobel Prize. His legacy primarily lies in institutionalizing scientific research and pioneering the atomic energy programme.
RAS PrelimsRajasthan Geography · Population of Rajasthan: Growth, Density, Literacy and Sex Ratio
Q9508. Consider the following statements regarding female literacy trends in Rajasthan: I. Female literacy improved significantly between 2001 and 2011 compared to previous decades. II. Despite improvements, Rajasthan has one of the lowest female literacy rates in India. III. Rural female literacy in Rajasthan is higher than urban female literacy. IV. Jalore district recorded a female literacy rate below 40 percent in 2011. Which of the above statements are correct?
Explanation
Female literacy in Rajasthan improved between 2001 and 2011, yet the state still maintains one of the lowest rates in India. Urban female literacy remains significantly higher than rural levels. Jalore stands out as a district with particularly low progress, with female literacy recorded below forty percent. These facts illustrate both the progress made and the remaining challenges in female education.
RAS PrelimsModern Indian History · Science and Technology in Independent India
Q9509. Consider the following statements regarding the Indian IT industry: Statement I: The Software Technology Parks of India (STPI) provided single-window clearance and tax incentives to IT companies in the 1990s. Statement II: Tata Consultancy Services (TCS) was one of the earliest Indian IT companies to pioneer the global delivery model for software services. Identify the correct statement from the options below.
Explanation
The growth of India’s IT industry was driven by both government support and private enterprise. The Software Technology Parks of India provided essential infrastructure and tax benefits during the 1990s. Simultaneously, companies like Tata Consultancy Services were pioneers in developing the global delivery model. These combined efforts allowed the sector to provide high-quality software services to international clients efficiently.
RAS PrelimsModern Indian History · Science and Technology in Independent India
Q9510. Given below are two statements, one labeled as Assertion (A) and the other as Reason (R): Assertion (A): The initial phase of the Green Revolution in India led to widening regional economic disparities. Reason (R): The high-yielding variety technologies were primarily successful in regions with assured irrigation infrastructure, such as Punjab, Haryana, and western Uttar Pradesh. In the context of the above statements, which one of the following is correct?
Explanation
The initial phase of the Green Revolution significantly boosted food production but also created regional economic disparities. This occurred because high-yielding variety seeds required reliable irrigation and chemical inputs, which were more readily available in states like Punjab, Haryana, and western Uttar Pradesh. Consequently, these regions prospered while areas lacking similar infrastructure did not experience the same level of agricultural growth.
Answer key for these questions
Q
Correct answer
9501
(a) A-ii, B-i, C-iv, D-iii
9502
(c) Jaisalmer
9503
(d) LVM3 (Launch Vehicle Mark-3)
9504
(d) Son preference coupled with easy access to illegal abortion technologies.
9505
(a) The DOS operates under the administrative jurisdiction of the Ministry of Science and Technology
9506
(a) Both Statement I and Statement II are true.
9507
(a) I and II
9508
(b) I, II, and IV only
9509
(c) Both Statement I and Statement II are correct
9510
(a) Both A and R are true and R is the correct explanation of A.
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.
