Materials & Engineering — UPSC Prelims Previous Year Questions
25 questions from UPSC CSE Prelims GS Paper 1 on Materials & Engineering (Science & Technology). Spanning from 1995 to 2025. Practice with show/hide answers and detailed explanations.
Based on 25 questions across 18 years, UPSC has consistently tested aspirants' understanding of Materials & Engineering within the broader Science & Technology syllabus. The questions range from factual recall to application-based analysis.
Recent trends show UPSC moving towards statement-based questions that combine multiple aspects of Materials & Engineering. Aspirants should focus on understanding concepts rather than memorizing isolated facts.
Q: निम्नलिखित कथनों पर विचार कीजिए :
कथन I : कुछ दुर्लभ मृदा तत्व, स्मार्ट टेलीविजन स्क्रीन और कम्प्यूटर मॉनिटर के निर्माण में प्रयुक्त होते हैं।
कथन II : कुछ दुर्लभ मृदा तत्वों में चुंबकीय गुणधर्म होते हैं।
उपयुक्त कथनों के संदर्भ में, निम्नलिखित में से कौन-सा एक सही है?
(a)कथन I और कथन II दोनों सही हैं तथा कथन II, कथन I की व्याख्या करता है
(b)कथन I और कथन II दोनों सही हैं किंतु कथन II, कथन I की व्याख्या नहीं करता है
Q: निम्नलिखित में से किनमें हाइड्रोजन का प्रयोग होता है ?
1. रोगियों में मिश्रित ऑक्सीजन डिलिवरी
2. चल वातायुक्त प्रणालियाँ
3. औद्योगिक रासायनिक प्रक्रियाएँ
नीचे दिए गए कूट का प्रयोग कर सही उत्तर चुनिए :
Q: निम्नलिखित कथनों पर विचार कीजिए :
1. कार्बन नैनोट्यूबों का उपयोग कभी-कभी सीमेंट-आधारित मिश्रित पदार्थों के निर्माण में किया जाता है।
2. कार्बन नैनोट्यूबों को औषधि वाहक के रूप में भी उपयोग किया जा सकता है।
उपयुक्त कथनों में से कौन-सा/से सही है/हैं?
Q: With reference to India, consider the following statements :
1. Monazite is a source of rare earths.
2. Monazite contains thorium.
3. Monazite occurs naturally in the entire Indian coastal sands in India.
4. In India, Government bodies only can process or export monazite.
Which of the statements given above are correct ?
Q: With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements :
1. Its fibres can be blended with wool and cotton fibres to reinforce their properties.
2. Containers made of it can be used to store any alcoholic beverage.
3. Bottles made of it can be recycled into other products.
4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions.
Which of the statements given above are correct ?
Q: Consider the following statements:
1. Other than those made by humans, nanoparticles do not exist in nature.
2. Nanoparticles of some metallic oxides are used in the manufacture of some cosmetics.
3. Nanoparticles of some commercial products which enter the environment are unsafe for humans.
Which of the statements given above is/are correct?
Q: With reference to carbon nanotubes, consider the following statements :
1. They can be used as carriers of drugs and antigens in the human body.
2. They can be made into artificial blood capillaries for an injured part of human body.
3. They can be used in biochemical sensors.
4. Carbon nanotubes are biodegradable.
Which of the statements given above are correct ?
Q: “3D मुद्रण” का निम्नलिखित में से किसमें प्रयोग होता है ?
1. धातुओं की चीज़ें बनाने में
2. जैव-इलेक्ट्रॉनिक अंगों के निर्माण में
3. ऑटोमोटिव उद्योग में
4. पुनर्निर्माणकारी शल्यचिकित्सा में
5. दत्त (डेटा) संभारण प्रौद्योगिकियों में
नीचे दिए गए कूट का प्रयोग कर सही उत्तर चुनिए :
Q: There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why?
1. They can accumulate in the environment, and contaminate water and soil.
2. They can enter the food chains.
3. They can trigger the production of free radicals.
Select the correct answer using the code given below.
Q: Graphene is frequently in news recently. What is its importance?
1. It is a two-dimensional material and has good electrical conductivity.
2. It is one of the thinnest but strongest materials tested so far.
3. It is entirely made of silicon and has high optical transparency.
4. It can be used as conducting electrodes required for touch screens, LCDs and organic LEDs.
Which of the statements given above are correct?
Q: Recently, there has been a concern over the short supply of a group of elements called ‘rare earth metals’. Why?
1. China, which is the largest producer of these elements, has imposed some restrictions on their export.
2. Other than China, Australia, Canada and Chile, these elements are not found in any country.
3. Rare earth metals are essential for the manufacture of various kinds of electronic items and there is a growing demand for these elements.
Which of the statements given above is/are correct?
Q: Consider the following statements:
1. The series of international paper sizes is based on A0 size whose area is 0.5 m² (approx).
2. The area of A4 size paper is 1⁄8th of the A0 size paper.
Which of the statements given above is/are correct?
Q: Match List I (Naturally occurring substances) with List II (Elements) and select the correct answer using the codes given below the Lists:
List I
I. Diamond
II. Marble
III. Sand
IV. Ruby
List II
A) Calcium
B) Silicon
C) Aluminium
D) Carbon
Codes:
Q: Consider the following statements:
I. Glass can be etched or scratched by diamond.
II. Glass can be etched or scratched by hydrofluoric acid.
III. Glass can be etched or scratched by aqua regia.
IV. Glass can be etched or scratched by concentrated sulphuric acid.
Which of these statements are correct?
Q: Consider the following statements: Coke is one of the materials of the charge added to blast furnace for the production of steel/iron. Its function is to
I. act as a reducing agent.
II. remove silica associated with the iron ore.
III. function as fuel, to supply heat.
IV. act as an oxidizing agent.
Of these statements:
Q: Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance?
Q: 102. Which one of the following polymers is widely used for making bullet-proof material?
(a)Polyvinyl chloride
(b)Polyamides
(c)Polyethylene
(d)Polycarbonates
Frequently Asked Questions
How many UPSC Prelims questions have been asked from Materials & Engineering?▼
UPSC has asked 25 questions on Materials & Engineering in GS Paper 1 Prelims between 1995 and 2025. This sub-topic falls under Science & Technology.
In which years has UPSC asked about Materials & Engineering?▼
Questions on Materials & Engineering have appeared in UPSC Prelims in the following years: 2025, 2024, 2023, 2022, 2020, 2018, 2014, 2012, 2008, 2007, 2006, 2005, 2004, 2000, 1999, 1998, 1996, 1995. The topic has appeared in 18 out of 31 years.
What is the difficulty level of Materials & Engineering questions in UPSC Prelims?▼
Among 25 questions on Materials & Engineering: 9 are easy, 15 are moderate, and 1 are difficult. Most questions test conceptual understanding of the topic.
