Science & Technology – UPSC Prelims PYQs
668 questions · 1995–2026 · answers as per the UPSC key · page 6 of 14
Consider the following :
- Camphor
- Chicory
- Vanilla
Which of the above is/are plant product(s) ?
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In the context of Indian wild life, the flying fox is a
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Which one among the following has the highest energy ?
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India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier ?
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In the context of Indian defence, consider the following statements :
- The Shourya missile flies with a speed of more than 8 Mach.
- The range of Shourya missile is more than 1600 km.
Which of the statements given above is/are correct ?
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WiMAX is related
to which one of the following ?
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For outstanding contribution
to which one of the following fields is Shanti Swarup Bhatnagar Prize given ?
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In making the saffron spice, which one of the following parts of the plant is used ?
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In the year 2008,
which one of the following conducted a complex scientific experiment in which sub-atomic particles were accelerated to nearly the speed of light ?
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With reference to the evolution of living organisms, which one of the following sequences is correct?
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What is Bisphenol A (BPA)?
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Selene-1, the lunar orbiter mission belongs to which one of the following?
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From which one of the following did India buy the Barak anti-missile defence systems?
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In which one of the following kinds of organisms is the phenomenon found wherein the female kills the male after copulation?
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Which one of the following is an insectivorous plant?
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ISRO successfully conducted a rocket test using cryogenic engines in the year 2007. Where is the test-stand used for the purpose, located?
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What is the pH level of blood of a normal person?
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Norman Ernest Borlaug who is regarded as the father of the Green Revolution in India is from which country?
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Consider the following statements about probiotic food:
- Probiotic food contains live bacteria which are considered beneficial to humans.
- Probiotic food helps in maintaining gut flora.
Which of the statements given above is/are correct?
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Which of the following pairs is/are correctly matched? Theory/Law — Associated Scientist
- Continental Drift : Edwin Hubble
- Expansion of Universe : Alfred Wegener
- Photoelectric Effect : Albert Einstein
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What is Agent Orange?
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Who among the following discovered heavy water?
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In order of their distances from the Sun,
which of the following planets lie between Mars and Uranus?
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In the year 2007, an earthquake led to massive radioactive water leakage in the largest nuclear plant in the world. In which country did it occur?
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Which one of the following is a spacecraft?
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In which one of the following locations is the International Thermonuclear Experimental Reactor (ITER) project to be built?
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What is the purpose of the US Space Agency's Themis Mission, which was recently in the news?
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Where was the first desalination plant in India to produce one lakh litres freshwater per day based on low temperature thermal desalination principle commissioned?
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Which of the following pairs are correctly matched? Institute — Location
- National Centre for Cell Science : Mysore
- Centre for DNA Fingerprinting and Diagnostics : Hyderabad
- National Brain Research Centre : Gurgaon
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With
which one of the following is BRIT (Government of India) engaged?
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Who among the following scientists shared the Nobel Prize in Physics with his son?
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Consider the following statements in respect of a jet engine and a rocket:
- A jet engine uses the surrounding air for its oxygen supply and so is unsuitable for motion in space.
- A rocket carries its own supply of oxygen in the gas form, and fuel.
Which of the statements given above is/are correct?
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Which one of the following laser types is used in a laser printer?
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Consider the following statements:
- A widely used musical scale called diatonic scale has seven frequencies.
- The frequency of the note Sa (स) is 256 Hz and that of Ni (नी) is 512 Hz.
Which of the statements given above is/are correct?
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What are Rubies and Sapphires chemically known as?
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Which one of the following is also called Stranger Gas?
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Mixture
of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?
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Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?
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Which of the following pairs is/are correctly matched?
- Francis Collins — Mapping human genome
- Sergey Brin : Google Search Engine
- Jimmy Wales — Wikipedia
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How can the height of a person who is six feet tall be expressed (approximately) in nanometres?
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A person is sitting in a car which is at rest. The reaction from the road at each of the four wheels of the car is R. When the car runs on a straight level road, how will the reaction at either of the front wheels vary?
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In the context of the Indian defence, what is ‘Dhruv’?
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Assertion (A): In human body, liver has an important role in fat digestion.
Reason (R): Liver produces two important fat-digesting enzymes.
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Assertion (A): In the visible spectrum of light, red light is more energetic than green light.
Reason (R): The wavelength of red light is more than that of green light.
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Assertion (A): Radio waves bend in a magnetic field.
Reason (R): Radio waves are electromagnetic in nature.
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Among the following, which one lays eggs and does not produce young ones directly?
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Nobel Prize–winning scientist James
D. Watson is known for his work in which area?
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Who among the following is considered as the inventor of the World Wide Web (WWW)?
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Consider the following statements:
- The series of international paper sizes is based on A0 size whose area is 0.5 m² (approx).
- The area of A4 size paper is 1⁄8th of the A0 size paper.
Which of the statements given above is/are correct?
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Recently, the European Union and six other countries including India signed the International Thermonuclear Experimental Reactor (ITER) Project.
Which one of the following was NOT a signatory to it?