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 PrelimsRajasthan History, Art and Culture · Temples, Forts, Palaces and Monuments
Q5831. Read Statement I and Statement II carefully regarding the City Palace in Udaipur and choose the correct option. Statement I: The City Palace in Udaipur was constructed over nearly 400 years with contributions from several successive Maharanas. Statement II: Despite the long period of construction, the palace maintains a highly uniform architectural style and perfectly symmetrical facade.
Explanation
The City Palace of Udaipur was built over nearly 400 years by successive Maharanas, so Statement I is correct. Because of this it mixes many styles and is not uniform, so Statement II is incorrect.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q5832. Identify the odd one out among the following vaccines based on their fundamental technology platform.
Explanation
Covaxin, the Salk Polio vaccine, and the standard Rabies vaccine are all based on the whole-virion inactivated platform, where a killed version of the pathogen is used to trigger immunity. The Pfizer- BioNTech vaccine, however, utilizes messenger RNA technology, which is a fundamentally different approach. It uses genetic instructions to prompt the body’s own cells to produce a specific viral protein.
RAS PrelimsRajasthan History, Art and Culture · Temples, Forts, Palaces and Monuments
Q5833. Which fort served as a historically critical sanctuary for Mewar royalty during crises, most notably hiding the infant Udai Singh II and later Maharana Pratap?
Explanation
Kumbhalgarh Fort historically served as a critical sanctuary for the Mewar royal family during times of crisis. Because of its remote location and nearly impregnable defenses, it was used to hide the infant Udai Singh II during a succession struggle. Later, Maharana Pratap also used the fort as a strategic base after the fall of Chittorgarh, making it a symbol of resilience.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q5834. Consider the following statements regarding the development of Covaxin: I. The SARS-CoV-2 strain used for Covaxin was isolated by the National Institute of Virology, Pune. II. It was manufactured using Vero cell culture technology. III. It was the first Indian vaccine to receive Emergency Use Listing (EUL) from the World Health Organization. IV. The technology transfer for Covaxin was exclusively purchased from a European pharmaceutical company. Which of the above statement(s) is/are correct?
Explanation
Covaxin was developed using a strain isolated by NIV Pune and manufactured using established Vero cell culture technology. It achieved international recognition by receiving the Emergency Use Listing from the World Health Organization. Importantly, the technology was developed indigenously in India through a partnership between national research institutes and a domestic company, rather than being purchased from overseas.
RAS PrelimsRajasthan History, Art and Culture · Temples, Forts, Palaces and Monuments
Q5835. The ‘Bapuna’ or ‘Baori’ (stepwell) is a common feature in Rajasthan’s forts. What is the fundamental difference between a standard well and a baori?
Explanation
The fundamental distinction between a standard well and a baori, or stepwell, is the presence of a staircase. While a well requires a rope and bucket to retrieve water from the surface, a baori features a flight of steps that descends directly to the water level. This design allowed for easier physical access, social gatherings, and even storage of cool water.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q5836. Which Indian biotechnology company developed GEMCOVAC-19, India’s first indigenous mRNA COVID-19 vaccine?
Explanation
Gennova Biopharmaceuticals, based in Pune, developed GEMCOVAC-19, which is India’s first indigenous mRNA vaccine for COVID-19. This achievement placed India among a small group of nations capable of producing mRNA-based medical products. The project was supported by the Department of Biotechnology and represents a significant milestone in India’s capacity for high-tech pharmaceutical innovation and pandemic preparedness.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q5837. In the mechanism of mRNA vaccines, what specific instruction does the injected mRNA provide to the host cells?
Explanation
mRNA vaccines work by delivering a small piece of genetic code to the body’s cells. This code serves as a set of instructions that tells the cells to build a specific protein found on the surface of the virus, such as the spike protein. Once the protein is produced, the immune system recognizes it as foreign and learns how to defend against it.
RAS PrelimsRajasthan History, Art and Culture · Temples, Forts, Palaces and Monuments
Q5838. Identify the odd one out from the following structures, based on their location within the Jaipur royal complex.
Explanation
Within the City Palace complex of Jaipur, the most prominent structures include the Mubarak Mahal, the Chandra Mahal, and the Diwan-i-Khas. These buildings serve administrative, residential, and ceremonial functions respectively. While many Rajasthani palaces feature a ‘Badal Mahal’ or Cloud Palace, the one in Jaipur is typically associated with the surrounding gardens or water bodies rather than the main inner palace.
RAS PrelimsRajasthan History, Art and Culture · Temples, Forts, Palaces and Monuments
Q5839. The following question consists of two statements -- Assertion (A) and Reason (R). Answer the question by selecting the appropriate option. Assertion (A): The Jaigarh Fort was never historically conquered in any major battle. Reason (R): It served as the primary artillery production center for the Rajputs and Mughals, boasting unmatched firepower.
Explanation
Jaigarh Fort is historically noted for never being captured by an invading army, earning it a reputation for total invincibility. This military success was partly due to its role as a major center for artillery production. The fort housed a large foundry where massive cannons, including the Jaivana, were cast, providing the Kachwaha rulers with unmatched firepower to defend their territories and capital.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q5840. Which of the following statements regarding India’s GEMCOVAC-19 is incorrect?
Explanation
A key innovation of India’s GEMCOVAC-19 is its stability at standard refrigerator temperatures. Unlike the first-generation mRNA vaccines from Pfizer and Moderna, which required specialized ultra-cold chains, the Indian version was designed to be thermotolerant. This was achieved through lyophilization, making it much easier to distribute and store using existing medical infrastructure in developing countries and rural areas.
Answer key for these questions
Q
Correct answer
5831
(c) Statement I is correct, but Statement II is incorrect.
5832
(c) Pfizer-BioNTech COVID-19 vaccine
5833
(d) Kumbhalgarh Fort
5834
(a) I, II, and III only
5835
(c) A baori features a flight of steps leading to the water level, allowing for the direct physical access.
5836
(c) Gennova Biopharmaceuticals
5837
(b) To produce a harmless piece of the target virus’s protein (like the spike protein) to trigger an immune response
5838
(d) Badal Mahal
5839
(a) Both A and R are true and R is the correct explanation of A.
5840
(a) It requires ultra-low temperature storage at -70°C, similar to the Pfizer and Moderna vaccines
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.
