Inventions, Units and India in Space MCQs

Solved MCQs on famous inventions and discoveries, SI and other units, and India's space and nuclear pioneers and missions such as Chandrayaan-3 and Mangalyaan.

1. 1

   The telephone was invented by:

   AMichael FaradayBAlexander Graham BellCThomas EdisonDNikola Tesla

   Correct answer: B. Alexander Graham Bell

   Alexander Graham Bell received the first US patent for the telephone in 1876.

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2. 2

   Penicillin, the first widely used antibiotic, was discovered by:

   AEdward JennerBRobert KochCAlexander FlemingDLouis Pasteur

   Correct answer: C. Alexander Fleming

   Fleming noticed in 1928 that a mould (Penicillium) killed bacteria. Jenner developed the smallpox vaccine.

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3. 3

   The World Wide Web was invented by:

   AVint CerfBTim Berners-LeeCBill GatesDCharles Babbage

   Correct answer: B. Tim Berners-Lee

   Tim Berners-Lee proposed the web at CERN in 1989. Vint Cerf co-designed the internet's TCP/IP protocols.

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4. 4

   Dynamite was invented by:

   AOtto HahnBThomas EdisonCAlfred NobelDJames Watt

   Correct answer: C. Alfred Nobel

   Alfred Nobel patented dynamite in 1867; his fortune later funded the Nobel Prizes.

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5. 5

   The theory of relativity was put forward by:

   AAlbert EinsteinBIsaac NewtonCMax PlanckDNiels Bohr

   Correct answer: A. Albert Einstein

   Einstein published special relativity in 1905 and general relativity in 1915.

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6. 6

   The steam engine was greatly improved, making it practical for industry, by:

   AJames WattBGeorge StephensonCHenry FordDWright brothers

   Correct answer: A. James Watt

   James Watt's separate condenser (1769) made steam engines far more efficient. Stephenson built early railway locomotives.

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7. 7

   The SI unit of electric charge is the:

   AvoltBfaradCampereDcoulomb

   Correct answer: D. coulomb

   One coulomb is the charge carried by a current of one ampere in one second.

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8. 8

   The hertz is the unit of:

   AenergyBpowerCpressureDfrequency

   Correct answer: D. frequency

   One hertz is one cycle per second.

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9. 9

   A light-year is a unit of:

   AbrightnessBtimeCdistanceDspeed

   Correct answer: C. distance

   A light-year is the distance light travels in one year, about 9.46 × 10¹² km.

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10. 10

    One nautical mile is equal to about:

    A1.609 kmB1.852 kmC2 kmD1.5 km

    Correct answer: B. 1.852 km

    A nautical mile, used at sea and in the air, is 1.852 km. A land (statute) mile is about 1.609 km.

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12. 11

    Chandrayaan-3's Vikram lander touched down on the Moon on:

    A2 September 2023B22 July 2019C23 August 2023D14 July 2023

    Correct answer: C. 23 August 2023

    It landed near the lunar south pole on 23 August 2023, now observed as National Space Day.

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13. 12

    India's Mars Orbiter Mission (Mangalyaan) was launched in:

    A2008B2011C2013D2016

    Correct answer: C. 2013

    Mangalyaan was launched on 5 November 2013 and entered Mars orbit in September 2014 on its first attempt.

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14. 13

    ISRO was founded in:

    A1962B1969C1972D1975

    Correct answer: B. 1969

    The Indian Space Research Organisation was formed on 15 August 1969.

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15. 14

    Who is regarded as the father of the Indian space programme?

    AA. P. J. Abdul KalamBSatish DhawanCHomi J. BhabhaDVikram Sarabhai

    Correct answer: D. Vikram Sarabhai

    Dr Vikram Sarabhai led the founding of India's space research; the Vikram lander is named after him.

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16. 15

    Who is known as the father of India's nuclear programme?

    AC. V. RamanBVikram SarabhaiCMeghnad SahaDHomi J. Bhabha

    Correct answer: D. Homi J. Bhabha

    Homi J. Bhabha founded the Tata Institute of Fundamental Research and the Atomic Energy Establishment, Trombay (now BARC).

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17. 16

    The largest planet in the solar system is:

    AUranusBNeptuneCJupiterDSaturn

    Correct answer: C. Jupiter

    Jupiter is a gas giant more than 11 times as wide as the Earth.

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18. 17

    Earthquakes are recorded with a:

    AaltimeterBseismographChygrometerDbarometer

    Correct answer: B. seismograph

    A seismograph records ground vibrations; earthquake magnitude is commonly given on the Richter or moment magnitude scale.

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19. 18

    Absolute zero, the lowest possible temperature, is:

    A0 °CB−100 °CC−273.15 °CD−459 °C

    Correct answer: C. −273.15 °C

    Absolute zero is 0 kelvin, which equals −273.15 °C (about −459.67 °F).

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20. 19

    The Raman effect, discovered by C. V. Raman, concerns the:

    Ascattering of lightBreflection of soundCdecay of radioactive elementsDmagnetism of metals

    Correct answer: A. scattering of light

    Raman showed that light scattered by a substance changes its wavelength slightly; he won the 1930 Nobel Prize in Physics.

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21. 20

    The device used to measure electric current in a circuit is the:

    AammeterBvoltmeterCohmmeterDgalvanometer only

    Correct answer: A. ammeter

    An ammeter is connected in series to measure current; a voltmeter is connected in parallel to measure voltage.

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