1113 RAS Prelims practice MCQs on science and technology are on this page, in 6 chapters. They cover the basics of everyday science, computers and information technology, defence and space technology in India, genetics, biotechnology and nanotechnology, science and technology policies and government programmes, and recent advances with Indian contributors and indigenisation. Each question has an answer and an explanation.
Practice questions based on the RPSC RAS Prelims syllabus. They follow the exam pattern but are not past-paper questions.
Showing 1061–1070 of 1113 questions
Browse Science and Technology chapters
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1061. Arrange the following steps conceptually involved in deploying an AI model for predictive healthcare in an Indian public hospital: A. Training the machine learning algorithm on the dataset B. Collecting anonymized patient electronic health records (EHR) C. Deploying the model for real-time risk prediction of incoming patients D. Validating and testing the model for accuracy and bias
Explanation
Deploying an AI model follows a logical progression starting with data preparation. First, anonymized health records are collected to form a dataset. This data is then used to train the machine learning algorithm. After training, the model must be rigorously validated and tested for accuracy and bias. Finally, once proven reliable, the model is deployed in clinical settings for real-time patient risk prediction.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1062. Which of the following government initiatives is an exception and is NOT primarily an Artificial Intelligence or Machine Learning based platform?
Explanation
Several government initiatives now incorporate AI, such as Bhashini for translations, Supace for judicial efficiency, and chatbots for citizen assistance. PRAGATI, however, is a multi-modal platform for interactive governance and project monitoring. It primarily uses video conferencing and geospatial technology to track the progress of various infrastructure projects and government schemes, rather than relying on AI-driven automated decision-making or language models.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1063. What is the cause-and-effect relationship between India’s push for data localization laws and indigenous AI development?
Explanation
Data localization laws require that data generated within India be stored and processed domestically. For AI development, this is crucial because it ensures that high-quality, diverse local data remains available for Indian researchers and companies. Training AI models on local datasets makes them more accurate and culturally relevant for Indian users, particularly for applications in local languages, agriculture, and regional healthcare.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1064. Identify the odd one out among the tools categorized under India’s Digital Public Infrastructure (DPI) incorporating advanced tech/AI.
Explanation
India’s Digital Public Infrastructure consists of foundational tools like Aadhaar for identity, UPI for payments, and DigiLocker for document storage. These are state-backed platforms designed to provide essential services to all citizens. ChatGPT is a generative AI tool developed by a private foreign company, OpenAI. While it is a popular application, it is not part of India’s indigenous public digital infrastructure.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1065. Read the following statements and select the correct option: Assertion (A): The overarching theme of India’s National Strategy for AI is ‘#AIforAll’. Reason (R): The government intends to leverage AI for inclusive growth, focusing on sectors like agriculture, health, and education.
Explanation
The ‘#AIforAll’ campaign reflects India’s commitment to using artificial intelligence as a tool for inclusive social development.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1066. The Tejas Mk1A, recently inducted into the Indian Air Force, is categorized as which generation of fighter aircraft?
Explanation
The Tejas Mk1A is classified as a 4.5-generation fighter aircraft. It represents a significant upgrade over the initial version, incorporating modern technologies that bridge the gap between fourth-generation and fifth-generation jets. These enhancements include advanced radar systems, improved electronic warfare capabilities, and the ability to fire sophisticated beyond-visual-range missiles, making it a highly capable platform for the modern battlefield.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1067. A major upgrade in the Tejas Mk1A is the integration of an AESA radar. What does AESA stand for in this context?
Explanation
AESA stands for Active Electronically Scanned Array, a type of advanced phased-array radar. Unlike traditional radars with moving parts, an AESA radar uses a computer-controlled array of many small transmitter/receiver modules. This allows it to scan the environment faster, track multiple targets simultaneously with higher precision, and be more resistant to electronic jamming, significantly increasing the aircraft’s combat effectiveness and situational awareness.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1068. The Tejas Light Combat Aircraft (LCA) program is primarily designed and developed by which agency?
Explanation
The Tejas Light Combat Aircraft was designed and developed by the Aeronautical Development Agency, which is the nodal agency for the national combat aircraft program. Operating under the Department of Defence R&D, ADA collaborates with various DRDO laboratories and Hindustan Aeronautics Limited. While HAL is the primary manufacturing partner, the core design and technological development are spearheaded by the specialists at ADA.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1069. Identify the correct pair regarding the weapon systems integrated on the Tejas Mk1A.
Explanation
The Tejas Mk1A is designed to carry a variety of advanced weapons, including the indigenous Astra missile. Astra is a beyond-visual-range air-to-air missile capable of engaging high-speed aerial targets at long distances. Its integration into the Tejas platform is a major step toward achieving self-reliance in strategic weaponry, reducing the need for imported missiles like those from Russia or Europe.
RAS PrelimsScience and Technology · Recent Advances, Indian Contributors and Indigenization
Q1070. Consider the following statements: Statement I: Tejas Mk1A features an indigenous digital fly-by-wire flight control system. Statement II: The aircraft is aerodynamically stable by design, making it flyable even without computers. Which of the following is correct?
Explanation
The Tejas features a sophisticated digital fly-by-wire system that manages all flight controls. Aerodynamically, the aircraft is designed to be inherently unstable to achieve superior maneuverability and agility. This instability means it cannot be flown manually without the constant, high-speed corrections provided by the onboard flight control computers. This design is a standard characteristic of modern, high-performance combat aircraft.
Answer key for these questions
Q
Correct answer
1061
(a) B, A, D, C
1062
(c) Pragati (Pro-Active Governance And Timely Implementation)
1063
(b) By retaining diverse Indian datasets within the country, indigenous AI models can be trained more effectively on local contexts and languages, improving domestic AI accuracy
1064
(d) ChatGPT
1065
(a) Both A and R are true and R is the correct explanation of A.
1066
(c) 4.5 generation
1067
(a) Active Electronically Scanned Array
1068
(d) Aeronautical Development Agency (ADA) under DRDO
1069
(b) Astra - Indigenous Beyond Visual Range (BVR) Air-to-Air Missile
1070
(c) Statement I is correct but Statement II is incorrect
Key facts from Science and Technology
The RPSC paper is General Knowledge and General Science, so science questions come with a strong dose of applied and recent topics.
Everyday science questions test the laws and terms of physics, chemistry and biology through examples.
Defence and space questions pair a missile, satellite or mission with its year and organisation.
Policy questions ask for the year, the body and the aim of schemes like STIP, the National Quantum Mission and BioE3.
Health, environment and agriculture are on a separate page, with their own chapters.
Frequently asked questions
How many RAS Prelims practice MCQs are there on Science and Technology?
This page has 1113 practice MCQs on Science and Technology. Each has the correct answer, and most have an explanation.
Which chapters does the science and technology set cover?
Six chapters: basics of everyday science; computers, information and communication technology; defence and space technology in India; genetics, biotechnology and nanotechnology; science and technology policies and government programmes; and recent advances, Indian contributors and indigenisation.
Is science and technology part of the RAS Prelims syllabus?
Yes. The RPSC paper is called General Knowledge and General Science, and its syllabus lists science and technology topics along with environment, health, agriculture and government programmes, so questions can come from any of these areas.
How should I prepare science for RAS Prelims?
Revise the concepts by examples, then learn the missions, schemes and scientists with their year and organisation. Attempt each chapter, read the explanations and keep a list of the facts you missed.
