Miscellaneous: UPSC Previous Year Questions (Science and Technology)
1 previous year UPSC Prelims question on Miscellaneous (Science and Technology). Choose an option to see the answer and explanation.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
Showing 1–1 of 1 question
UPSC 2017Science and Technology · Miscellaneous
Q1. Organic Light Emitting Diodes (OLEDs) are used to create digital displays in many devices. What are the advantages of OLED displays over Liquid Crystal displays? 1. OLED displays can be fabricated on flexible plastic substrates. 2. Roll-up displays embedded in clothing can be made using OLEDs. 3. Transparent displays are possible using OLEDs. Select the correct answer using the code given below:
Explanation
Statement 1 is correct: OLEDs can be manufactured on flexible materials such as polyethylene terephthalate (PET), which allows the creation of foldable and bendable screens. Unlike LCDs, which require rigid glass substrates, OLEDs can use lightweight and flexible plastics, enabling the development of innovative designs like foldable smartphones and rollable displays.
Statement 2 is correct: The flexibility and thinness of OLEDs make them suitable for rollable screens that can be integrated into textiles or wearable devices. This innovation enables the creation of electronic clothing or fabrics with embedded displays, providing new possibilities in wearable technology.
Statement 3 is correct: OLED technology supports the development of transparent displays because it does not rely on a backlight. OLEDs produce light on their own, making it possible to create see-through screens that overlay digital content on real-world environments.
Answer key for these questions
Q
UPSC year
Correct answer
1
2017
(c) 1, 2 and 3
Frequently asked questions
How many previous year UPSC questions are there on Miscellaneous?
This page covers 1 previous year UPSC Prelims GS Paper-I questions on Miscellaneous (Science and Technology), asked from 2011 to 2025. Each has the correct answer and an explanation.
How should I use previous year UPSC questions for Prelims?
Attempt each question first, then open the answer and read the explanation for every option. Repeat by chapter, and track which statements UPSC reuses across years. Previous year questions show the exam pattern and difficulty level.
Which years are covered for Miscellaneous?
Questions on Miscellaneous (Science and Technology) are available for 15 years, from 2011 to 2025. Use the Year filter to practise a single paper.
