Q1071. Which of the following statements about the indigenization of the Tejas Mk1A is incorrect?
Science and Technology: RAS Prelims MCQs
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.
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Q1072. Which of the following capabilities is an exception and is NOT a feature of the Tejas Mk1A variant?
Explanation
The Tejas Mk1A is a single-engine light combat aircraft designed for agility and multi-role operations. It features mid-air refueling, advanced electronic warfare suites, and beyond-visual-range missile capabilities. However, it is not a twin-engine aircraft, nor is it designed for supercruise, which is the ability to maintain supersonic flight without afterburners.
Q1073. What is a primary aerodynamic effect of the tailless compound delta wing design used in the Tejas aircraft?
Explanation
The tailless compound delta wing design is a defining aerodynamic feature of the Tejas. This shape allows the aircraft to maintain control at high angles of attack, known as high-alpha performance, which is crucial for close-range dogfighting. Additionally, this configuration enables very high roll rates, making the Tejas exceptionally agile and capable of performing rapid maneuvers that can out-turn many contemporary fighter aircraft.
Q1074. Consider the following statements regarding the Tejas Mk1A upgrades over the initial Operational Clearance (IOC) version:
I. It includes an Active Electronically Scanned Array (AESA) radar.
II. It features improved maintainability and faster turnaround times.
III. It has a significantly larger wingspan and a secondary cockpit for a co-pilot in all single-seat versions.
Which of the above statement(s) is/are correct?
I. It includes an Active Electronically Scanned Array (AESA) radar.
II. It features improved maintainability and faster turnaround times.
III. It has a significantly larger wingspan and a secondary cockpit for a co-pilot in all single-seat versions.
Which of the above statement(s) is/are correct?
Explanation
The Mk1A variant introduces several critical upgrades to the Tejas platform, including an AESA radar and improved electronic warfare systems. It also focuses on enhanced maintainability, allowing for faster turnaround times between missions. However, the Mk1A maintains the same basic single-seat configuration and wingspan as the initial version; it does not add a second cockpit or significantly change the aircraft’s physical dimensions.
Q1075. The INS Vikrant, India’s first indigenous aircraft carrier, is formally designated as IAC-1. What does IAC stand for?
Explanation
INS Vikrant is designated IAC-1, which stands for Indigenous Aircraft Carrier. It was built in India.
Q1076. The INS Vikrant utilizes STOBAR technology for flight operations. What is the fundamental mechanism of STOBAR?
Explanation
STOBAR stands for Short Take-Off But Arrested Recovery. On the INS Vikrant, aircraft take off using their own power assisted by a curved "ski-jump" at the bow, which helps them gain altitude quickly. For landing, the aircraft use a tailhook to catch one of several strong arrestor wires stretched across the deck, which rapidly brings the fast-moving jet to a complete stop.
Q1077. Which Indian public sector shipyard was responsible for the construction of INS Vikrant?
Explanation
The construction of the INS Vikrant was undertaken by Cochin Shipyard Limited in Kochi, Kerala. This project was the largest and most complex shipbuilding endeavor ever handled by an Indian shipyard. It involved coordinating thousands of components, specialized warship-grade steel, and advanced engineering systems, demonstrating the shipyard’s ability to meet the rigorous standards required for modern naval aviation platforms.
Q1078. Which of the following statements correctly highlights the indigenization achievement of INS Vikrant?
Explanation
INS Vikrant is a testament to India’s "Atmanirbhar Bharat" initiative, with approximately 76% of its components being sourced domestically. This includes the high-grade warship steel produced by the Steel Authority of India and various complex systems like the combat management system. While some specialized components are still imported, the high level of indigenous content signifies a major shift toward self-reliance in strategic naval technology.
Q1079. Identify the correct pair regarding the air wing intended for INS Vikrant.
Explanation
The air wing of INS Vikrant is designed to operate a mix of fighter jets and helicopters. Currently, the Russian-origin MiG-29K serves as the primary multi-role fighter for the carrier. In the future, the navy plans to induct more advanced fighters, possibly including the indigenous Twin Engine Deck Based Fighter or other modern naval aircraft, to enhance the carrier’s strike and defense capabilities.
Q1080. Consider the following statements regarding carrier launch systems:
Statement I: The ski-jump design (STOBAR) is mechanically simpler and cheaper than a catapult system (CATOBAR).
Statement II: A ski-jump allows aircraft to take off with heavier weapon and fuel loads compared to a catapult system.
Which of the following is correct?
Statement I: The ski-jump design (STOBAR) is mechanically simpler and cheaper than a catapult system (CATOBAR).
Statement II: A ski-jump allows aircraft to take off with heavier weapon and fuel loads compared to a catapult system.
Which of the following is correct?
Explanation
The ski-jump system (STOBAR) is mechanically simpler and more cost-effective than catapult-based systems because it does not require complex steam or electromagnetic launch machinery. However, this comes at a performance cost; aircraft taking off from a ski-jump are limited in the amount of fuel and heavy weaponry they can carry compared to those launched with the extra power of a catapult.Answer key for these questions
| Q | Correct answer |
|---|---|
| 1071 | (a) The Tejas Mk1A is currently powered by a fully indigenous Kaveri engine |
| 1072 | (b) Twin-engine supercruise capability |
| 1073 | (b) It provides high-alpha performance and high roll rates. |
| 1074 | (a) I and II only |
| 1075 | (c) Indigenous Aircraft Carrier |
| 1076 | (d) Ski-jump engine takeoff assisted by arrestor wire landing |
| 1077 | (c) Cochin Shipyard Limited, Kochi |
| 1078 | (b) Roughly 76% of components, including warship steel, are indigenous. |
| 1079 | (d) MiG-29K - Primary fighter aircraft currently operating from the carrier |
| 1080 | (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.