Science & Technology PYQs

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1. Prelims 2008Q121Inventions & Scientists

   Which of the following pairs is/are correctly matched?

   1.Francis Collins — Mapping human genome

   2.Sergey Brin : Google Search Engine

   3.Jimmy Wales — Wikipedia

   Select the correct answer using the code given below:

   a1 and 2 onlyb2 and 3 onlyc3 onlyd1, 2 and 3
2. Prelims 2008Q126Physics

   How can the height of a person who is six feet tall be expressed (approximately) in nanometres?

   a183 × 10⁶ nanometresb234 × 10⁶ nanometresc183 × 10⁷ nanometresd234 × 10⁷ nanometres
3. Prelims 2008Q127PhysicsAnswer disputed

   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?

   aIt will be greater than RbIt will be less than RcIt will be equal to RdIt shall depend on the material of the road
4. Prelims 2008Q130Defence & Nuclear Technology

   In the context of the Indian defence, what is ‘Dhruv’?

   aAircraft-carrying warshipbMissile-carrying submarinecAdvanced light helicopterdIntercontinental ballistic missile
5. Prelims 2008Q132Biology & Human Body

   Assertion (A): In human body, liver has an important role in fat digestion.

   Reason (R): Liver produces two important fat-digesting enzymes.

   aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
6. Prelims 2008Q133Physics

   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.

   aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
7. Prelims 2008Q134Physics

   Assertion (A): Radio waves bend in a magnetic field.

   Reason (R): Radio waves are electromagnetic in nature.

   aBoth A and R are individually true and R is the correct explanation of AbBoth A and R are individually true but R is not the correct explanation of AcA is true but R is falsedA is false but R is true
8. Prelims 2008Q137Health & Diseases

   The release of which one of the following into ponds and wells helps in controlling the mosquitoes?

   aCrabbDogfishcGambusia fishdSnail
9. Prelims 2008Q143Inventions & Scientists

   Nobel Prize–winning scientist James D. Watson is known for his work in which area?

   aMetallurgybMeteorologycEnvironmental protectiondGenetics
10. Prelims 2007Q5Physics

    Which of the following types is used by computed tomography employed for visualization of the internal structure of human body?

    aX-RaybSound wavescMagnetic resonancedRadioisotopes
11. Prelims 2007Q12Space Technology

    What is the Galileo project which has been in news recently?

    aAn inter-country programme of missile shield developed by the United States of AmericabA project developed by India with assistance from CanadacAn environmental protection project being developed by JapandA multi-satellite navigation project being developed by the European Union
12. Prelims 2007Q15Biology & Human Body

    Which one of the following is the correct sequence in order of decreasing length of the three structural parts given below of small intestine in the human body?

    aJejunum – Duodenum – IleumbIleum – Duodenum – JejunumcJejunum – Ileum – DuodenumdIleum – Jejunum – Duodenum
13. Prelims 2007Q17Biology & Human Body

    In the human body which one of the following hormones regulates blood calcium and phosphate?

    aGlucagonbGrowth hormonecParathyroid hormonedThyroxin
14. Prelims 2007Q18Biology & Human Body

    How do most insects respire?

    aThrough skinbThrough gillscBy lungsdBy tracheal system
15. Prelims 2007Q19Biology & Human Body

    In human beings, normally in which one of the following parts does the sperm fertilize the ovum?

    aCervixbFallopian TubecLower Part of UterusdUpper Part of Uterus
16. Prelims 2007Q20Biology & Human Body

    Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?

    aCerebellumbCerebrumcMedulla oblongatadPons
17. Prelims 2007Q21Biology & Human Body

    Production of which one of the following is a function of the liver?

    aLipasebUreacMucusdHydrochloric acid
18. Prelims 2007Q24Biology & Human Body

    Which of the following is not a digestive enzyme in the human system?

    aTrypsinbGastrincPtyalindPepsin
19. Prelims 2007Q25Biology & Human Body

    Which of the following types of light are strongly absorbed by plants?

    aViolet and OrangebBlue and RedcIndigo and YellowdYellow and Violet
20. Prelims 2007Q27Space Technology

    Which one of the following pairs is not correctly matched?

    aCosmic Background Explorer (COBE) : Satellite ProgrammebFalcon : Under-sea cable systemcDiscovery : Space shuttledAtlantis : Space station