Science & Technology PYQs

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1. Prelims 2005Q16Chemistry

   Consider the following statements :

   1.Anhydrous sodium carbonate is commonly known as baking soda

   2.Baking soda is used in fire extinguishers

   3.Bleaching powder is manufactured in Hasenclever plant

   Which of the statements given above is/are correct?

   a1, 2 and 3b2 and 3c3 onlyd1 and 2
2. Prelims 2005Q17PhysicsAnswer disputed

   Consider the following statements :

   1.A geostationary satellite is at an approximate height of 10,000 km

   2.FM transmission of music is of very good quality because the atmospheric or man-made noises which are generally frequency variations can do little harm.

   Which of the statements given above is/are correct?

   a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
3. Prelims 2005Q18PhysicsAnswer disputed

   What is the order of magnitude of electric resistance of the human body (dry)?

   a10² ohmb10⁴ ohmc10⁶ ohmd10⁸ ohm
4. Prelims 2005Q21Health & Diseases

   Pneumoconiosis afflicts the workers who work mainly in

   aTanneriesbCoal mining industrycDistilleriesdGlass industry
5. Prelims 2005Q30Defence & Nuclear Technology

   Which one of the following pairs is not correctly matched?

   aArjun : Indigenous produced Main Battle Tank (MBT)bPhalcon : Cruise missile supplied by Russia to IndiacSaras : Indigenously developed civilian passenger aircraftdOperation Seabird : New Indian Naval Base at Karwar
6. Prelims 2005Q49Inventions & Scientists

   Who among the following invented Lasers?

   aTheodore MaimanbDenis PapincWilliam MotondFrancis Crick
7. Prelims 2005Q71Chemistry

   Consider the following statements :

   1.During the process of osmosis, the solvent travels from the concentrated solution to the dilute solution.

   2.In the reverse osmosis, external pressure is applied to the dilute solution.

   Which of the statements given above is/are correct?

   a1 onlyb2 onlycBoth 1 and 2dNeither 1 nor 2
8. Prelims 2005Q85Biology & Human Body

   Assertion (A): All the proteins in our food are digested in small intestine only.

   Reason (R): The protein-digesting enzymes from pancreas are released into small intestine.

   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
9. Prelims 2005Q86Biology & Human Body

   Assertion (A): Amoeba reproduces by fission.

   Reason (R): All unicellular organisms reproduce by asexual methods.

   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
10. Prelims 2005Q88Chemistry

    Assertion (A): The main constituent of the Liquefied Petroleum Gas is methane.

    Reason (R): Methane can be used directly for burning in homes and factories where it can be supplied through pipelines.

    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
11. Prelims 2005Q89Health & Diseases

    Assertion (A): The person with diabetes insipidus feels thirsty.

    Reason (R): A person with diabetes insipidus suffers from excess secretion of vasopressin.

    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
12. Prelims 2005Q90Inventions & Scientists

    Consider the following statements :

    1.Vigyan Rail is a Science Exhibition on wheels organized by the Council of Scientific and Industrial Research.

    2.Vigyan Prasar is an autonomous body under the Ministry of Human Resource Development.

    3.EDUSAT, the ISRO’s educational satellite was launched from French Guyana in 2004.

    Which of the statements given above is/are correct?

    a1, 2 and 3b1 and 2c2 and 3dNone
13. Prelims 2005Q100Defence & Nuclear Technology

    Match List-I (Atomic Power Plants/Heavy Water Plants) with List-II (State) and select the correct answer using the code given below the lists :

    List-I

    A.Thal

    B.Manuguru

    C.Kakrapar

    D.Kaiga

    List-II (State)

    1.Andhra Pradesh

    2.Gujarat

    3.Maharastra

    4.Maha

    5.Karnataka

    aA-2, B-1, C-4, D-5bA-3, B-5, C-2, D-1cA-2, B-5, C-4, D-1dA-3, B-1, C-2, D-5
14. Prelims 2005Q101Physics

    Which one of the following is the correct sequence of the given substances in the decreasing order of their densities?

    aSteel > Mercury > GoldbGold > Mercury > SteelcSteel > Gold > MercurydGold > Steel > Mercury
15. Prelims 2005Q106Defence & Nuclear Technology

    Which one of the following pairs is not correctly matched?

    aSouthern Air Command – ThiruvananthapurambEastern Naval Command – VisakhapatnamcArmoured Corps Centre and School – JabalpurdArmy Medical Corps Centre and School – Lucknow
16. Prelims 2005Q130Health & Diseases

    Which one of the following diseases of milching animals are infectious?

    1.Foot and Mouth disease

    2.Anthrax

    3.Black Quarter

    4.Cowpox

    Select the correct answer using the codes given below:

    a1, 2 and 3b2, 3 and 4c1 and 4d1, 2, 3 and 4
17. Prelims 2005Q132Health & Diseases

    Consider the following statements:

    1.Dengue is a protozoan disease transmitted by mosquitoes.

    2.Retro-orbital pain is not a symptom of Dengue.

    3.Skin rash and bleeding from nose and gums are some of the symptoms of Dengue.

    Which one of the following statements is/are correct?

    a1 and 2b3 onlyc2 onlyd1 and 3
18. Prelims 2005Q139Health & Diseases

    Where was the world’s largest ever meet on HIV/AIDS held in July, 2004?

    aBangkokbSingaporecNew YorkdRome
19. Prelims 2005Q149IT & Communication

    Consider the following statements:

    1.The number of post offices in India is in excess of 1.5 lakhs.

    2.Bharat Sanchar Nigam Limited (BSNL) was formed in the year 1997.

    3.The Telecom Regulatory Authority of India (TRAI) was established in the year 2000.

    Which of the statements given above is/are correct?

    a1 and 3b1 and 2c1 onlyd3 only
20. Prelims 2004Q10Health & DiseasesAnswer disputed

    Consider the following statements:

    1.Non-function of lachrymal gland is an important symptom of deficiency of Vitamin A.

    2.Deficiency of Vitamin B1 can lead to indigestion and heart enlargement.

    3.Vitamin C deficiency can lead to pain in the muscles.

    4.Deficiency of Vitamin D causes increased loss of Ca++ in urine.

    Which of these statements given above are correct?

    a1 and 2b2, 3 and 4c1, 3 and 4d1, 2, 3 and 4