Science & Technology PYQs

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1. Prelims 2002Q118Health & Diseases

   Foot-and-mouth disease in animals, a current epidemic in some parts of the world, is caused by

   aBacteriumbFunguscProtozoandVirus
2. Prelims 2002Q121Physics

   A hollow sphere of radius R, a hollow cube of side R and a thin circular plate of radius R, made up of the same material, are all heated to 20 °C above room temperature. When left to cool in the room, which of them will reach the room temperature first?

   aCircular platebCubecSpheredAll of them will reach the room temperature at the same time
3. Prelims 2002Q127Biology & Human Body

   Which one of the following statements is not correct?

   aAll echinoderms are viviparousbRound worm has no circulatory systemcIn bony fishes, swim bladder is usually presentdIn cartilaginous fishes, fertilisation is internal
4. Prelims 2002Q129Inventions & Scientists

   Match List I (Scientists) with List II (Achievement) and select the correct answer using the codes given below the lists:

   List I (Scientists)

   A.Arber and Smith

   B.Feldman

   C.Mullis

   D.Temin and Baltimore

   List II (Achievement)

   1.Developed transgenic plants with Agrobacterium T-DNA

   2.Discovered endonucleases

   3.Discovered reverse transcriptase

   4.Discovered polymerase chain reaction

   aA-2, B-1, C-4, D-3bA-1, B-2, C-4, D-3cA-2, B-1, C-3, D-4dA-1, B-2, C-3, D-4
5. Prelims 2002Q134Biology & Human Body

   Which one of the following statements is correct?

   aPrions are the smallest free-living cellsbThe cell wall of Mycoplasmas is made up of amino sugarscViroids consist of a single-stranded RNA moleculedRickettsia’s lack cell wall
6. Prelims 2002Q139Space Technology

   With reference to Indian satellites and their launchers, consider the following statements:

   1.All the INSAT-series of satellites were launched abroad

   2.PSLVs were used to launch IRS-series of satellites

   3.India used the indigenously built cryogenic engines for the first time for powering the third stage of GSLV

   4.GSAT, launched in the year 2001, has payloads to demonstrate digital broadcasts and internet services

   Which of these statements are correct?

   a1, 2, 3 and 4b2, 3 and 4c1, 2 and 4d1 and 3
7. Prelims 2002Q141Biology & Human Body

   Assertion (A): Drinking of whisky increases the frequency of urination.

   Reason (R): Alcohol intake speeds up the secretion of vasopressin in the body.

   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 a correct explanation of AcA is true but R is falsedA is false but R is true
8. Prelims 2002Q143Physics

   Assertion (A): With the increase of temperature, the viscosity of glycerine increases.

   Reason (R): Rise of temperature increases kinetic energy of molecules.

   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 a correct explanation of AcA is true but R is falsedA is false but R is true
9. Prelims 2002Q145Chemistry

   Assertion (A): Synthetic detergents can lather well in hard water.

   Reason (R): Synthetic detergents form soluble calcium and magnesium salts with hard water.

   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 a correct explanation of AcA is true but R is falsedA is false but R is true
10. Prelims 2002Q147Space TechnologyAnswer disputed

    Assertion (A): Artificial satellites are always launched from the earth in the eastward direction.

    Reason (R): The earth rotates from west to east and so the satellite attains the escape velocity.

    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 a correct explanation of AcA is true but R is falsedA is false but R is true
11. Prelims 2002Q148Health & Diseases

    Assertion (A): Human diet should compulsorily contain Glycerine, Serine and Tyrosine.

    Reason (R): Essential amino acids cannot be synthesised in the human body.

    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 a correct explanation of AcA is true but R is falsedA is false but R is true
12. Prelims 2002Q150Physics

    Assertion (A): An iron ball floats on mercury but gets immersed in water.

    Reason (R): The specific gravity of iron is more than that of mercury.

    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 a correct explanation of AcA is true but R is falsedA is false but R is true
13. Prelims 2001Q11Defence & Nuclear Technology

    Consider the following organisations:

    I.Atomic Minerals Directorate for Research and Exploration

    II.Heavy Water Board

    III.Indian Rare Earths Limited

    IV.Uranium Corporation of India

    Which of these is/are under the Department of Atomic Energy?

    aI onlybI and IVcII, III and IVdI, II, III and IV
14. Prelims 2001Q25Space Technology

    Who amongst the following was the Chairman of ISRO when INSAT-3B was launched?

    aAnil KakodarbAbdul KalamcK. KasturirangandU. R. Rao
15. Prelims 2001Q37Defence & Nuclear Technology

    Consider the following statements regarding the Armed Forces:

    I.First batch of women pilots was commissioned in Indian Air Force in 1996.

    II.Officers’ Training Academy is located in Nagpur.

    III.Southern Command of Indian Navy has its Headquarters at Chennai.

    IV.One of the Regional Headquarters of Coast Guard is located at Port Blair.

    Which of these statements are correct?

    aI, II, III and IVbII, III and IVcIII onlydIV only
16. Prelims 2001Q46Inventions & Scientists

    Match List I with List II and select the correct answer using the codes given below the Lists:

    List I (Institute)

    A.Central Institute of Medicinal and Aromatic Plants

    B.Centre for DNA Finger Printing and Diagnostics

    C.Institute of Microbial Technology

    D.National Institute of Immunology

    List II (Location)

    1.Chandigarh

    2.Hyderabad

    3.New Delhi

    4.Lucknow

    aA-2, B-4, C-1, D-3bA-4, B-2, C-1, D-3cA-2, B-4, C-3, D-1dA-4, B-2, C-3, D-1
17. Prelims 2001Q48Defence & Nuclear Technology

    The range of Agni-II missile is around

    a500 kmb2000 kmc3500 kmd5000 km
18. Prelims 2001Q100Physics

    Two wires have their lengths, diameters and resistivities, all in the ratio of 1 : 2. If the resistance of the thinner wire is 10 ohms, the resistance of the thicker wire is

    a10 ohmsb5 ohmsc20 ohmsd40 ohms
19. Prelims 2001Q101Physics

    Assertion (A): A stick is dipped in water in a slanting position. If observed sideways, the stick appears short and bent at the surface of water.

    Reason (R): The light coming from the stick undergoes scattering from water molecules giving the stick a short and bent appearance.

    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 a correct explanation of AcA is true but R is falsedA is false but R is true
20. Prelims 2001Q102Physics

    Assertion (A): A piece of copper and a piece of glass are heated to the same temperature.

    When touched, thereafter, the copper piece appears hotter than the glass piece.

    Reason (R): The density of copper is more than that of glass.

    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 a correct explanation of AcA is true but R is falsedA is false but R is true