UPSC 2008 › Science & Technology

37 questions · 2008 · answers as per the UPSC key

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Topics: Biology (6)Physics (6)Space Technology & Astronomy (6)Chemistry (5)Energy & Environment (4)Science & Technology History (4)Defence Technology (2)Health & Diseases (2)Materials & Engineering (1)Science & Technology Institutions (1)

What is Bisphenol A (BPA)?

(a) A medical test for detecting cancer
(b) A test for testing the use of drugs to improve performance by athletes
(c) A chemical used for the development of food-packaging materials
(d) A special type of alloy steel
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Answer: (c) A chemical used for the development of food-packaging materials

Selene-1, the lunar orbiter mission belongs to which one of the following?

(a) China
(b) European Union
(c) Japan
(d) USA
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Answer: (c) Japan

From which one of the following did India buy the Barak anti-missile defence systems?

(a) Israel
(b) France
(c) Russia
(d) USA
Show answer
Answer: (a) Israel

In which one of the following kinds of organisms is the phenomenon found wherein the female kills the male after copulation?

(a) Dragonfly
(b) Honeybee
(c) Spider
(d) Pit viper
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Answer: (c) Spider

Which one of the following is an insectivorous plant?

(a) Passion flower plant
(b) Pitcher plant
(c) Night queen
(d) Flame of the forest
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Answer: (b) Pitcher plant

ISRO successfully conducted a rocket test using cryogenic engines in the year 2007. Where is the test-stand used for the purpose, located?

(a) Balasore
(b) Thiruvananthapuram
(c) Mahendragiri
(d) Karwar
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Answer: (c) Mahendragiri

What is the pH level of blood of a normal person?

(a) 4·5 – 4·6
(b) 6·45 – 6·55
(c) 7·35 – 7·45
(d) 8·25 – 8·35
Show answer
Answer: (c) 7·35 – 7·45

Norman Ernest Borlaug who is regarded as the father of the Green Revolution in India is from which country?

(a) United States of America
(b) Mexico
(c) Australia
(d) New Zealand
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Answer: (a) United States of America

Consider the following statements about probiotic food:

  1. Probiotic food contains live bacteria which are considered beneficial to humans.
  2. Probiotic food helps in maintaining gut flora.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (c) Both 1 and 2

Which of the following pairs is/are correctly matched? Theory/Law — Associated Scientist

  1. Continental Drift : Edwin Hubble
  2. Expansion of Universe : Alfred Wegener
  3. Photoelectric Effect : Albert Einstein

Select the correct answer using the code given below:

(a) 2 and 3 only
(b) 3 only
(c) 2 only
(d) 1 only
Show answer
Answer: (b) 3 only

What is Agent Orange?

(a) An ace spying group trained by the Police in London
(b) A weed-killing chemical used by the US Military in the Vietnam War
(c) A technique used in the advanced railway safety procedure
(d) A special chemical used in making alloy steel
Show answer
Answer: (b) A weed-killing chemical used by the US Military in the Vietnam War

Who among the following discovered heavy water?

(a) Heinrich Hertz
(b) H. C. Urey
(c) G. Mendel
(d) Joseph Priestley
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Answer: (b) H. C. Urey

In order of their distances from the Sun,

which of the following planets lie between Mars and Uranus?

(a) Earth and Jupiter
(b) Jupiter and Saturn
(c) Saturn and Earth
(d) Saturn and Neptune
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Answer: (b) Jupiter and Saturn

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?

(a) Germany
(b) Canada
(c) Japan
(d) USA
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Answer: (c) Japan

Which one of the following is a spacecraft?

(a) Apophis
(b) Cassini
(c) Spitzer
(d) TechSar
Show answer
Answer: (b) Cassini

In which one of the following locations is the International Thermonuclear Experimental Reactor (ITER) project to be built?

(a) Northern Spain
(b) Southern France
(c) Eastern Germany
(d) Southern Italy
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Answer: (b) Southern France

What is the purpose of the US Space Agency's Themis Mission, which was recently in the news?

(a) To study the possibility of life on Mars
(b) To study the satellites of Saturn
(c) To study the colourful display of high latitude skies
(d) To build a space laboratory to study the stellar explosions
Show answer
Answer: (c) To study the colourful display of high latitude skies

Where was the first desalination plant in India to produce one lakh litres freshwater per day based on low temperature thermal desalination principle commissioned?

(a) Kavaratti
(b) Port Blair
(c) Mangalore
(d) Valsad
Show answer
Answer: (a) Kavaratti

Which of the following pairs are correctly matched? Institute — Location

  1. National Centre for Cell Science : Mysore
  2. Centre for DNA Fingerprinting and Diagnostics : Hyderabad
  3. National Brain Research Centre : Gurgaon

Select the correct answer using the code given below:

(a) 1, 2 and 3
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1 and 3 only
Show answer
Answer: (c) 2 and 3 only

With

which one of the following is BRIT (Government of India) engaged?

(a) Railway Wagons
(b) Information Technology
(c) Isotope Technology
(d) Road Transport
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Answer: (c) Isotope Technology

Who among the following scientists shared the Nobel Prize in Physics with his son?

(a) Max Planck
(b) Albert Einstein
(c) William Henry Bragg
(d) Enrico Fermi
Show answer
Answer: (c) William Henry Bragg

Consider the following statements in respect of a jet engine and a rocket:

  1. A jet engine uses the surrounding air for its oxygen supply and so is unsuitable for motion in space.
  2. A rocket carries its own supply of oxygen in the gas form, and fuel.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (c) Both 1 and 2

Which one of the following laser types is used in a laser printer?

(a) Dye laser
(b) Gas laser
(c) Semiconductor laser
(d) Excimer laser
Show answer
Answer: (c) Semiconductor laser

Consider the following statements:

  1. A widely used musical scale called diatonic scale has seven frequencies.
  2. 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?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Show answer
Answer: (a) 1 only

What are Rubies and Sapphires chemically known as?

(a) Silicon dioxide
(b) Aluminium oxide
(c) Lead tetroxide
(d) Boron nitride
Show answer
Answer: (b) Aluminium oxide

Which one of the following is also called Stranger Gas?

(a) Argon
(b) Neon
(c) Xenon
(d) Nitrous oxide
Show answer
Answer: (c) Xenon

Mixture

of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?

(a) Hydrogen and oxygen
(b) Oxygen and acetylene
(c) Methane and air
(d) Carbon dioxide and methane
Show answer
Answer: (c) Methane and air

Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?

(a) Lithium and mercury
(b) Lithium and osmium
(c) Aluminium and osmium
(d) Aluminium and mercury
Show answer
Answer: (b) Lithium and osmium

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:

(a) 1 and 2 only
(b) 2 and 3 only
(c) 3 only
(d) 1, 2 and 3
Show answer
Answer: (d) 1, 2 and 3

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

(a) 183 × 10⁶ nanometres
(b) 234 × 10⁶ nanometres
(c) 183 × 10⁷ nanometres
(d) 234 × 10⁷ nanometres
Show answer
Answer: (c) 183 × 10⁷ nanometres

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?

(a) It will be greater than R
(b) It will be less than R
(c) It will be equal to R
(d) It shall depend on the material of the road
Show answer
Answer: (c) It will be equal to R

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

(a) Aircraft-carrying warship
(b) Missile-carrying submarine
(c) Advanced light helicopter
(d) Intercontinental ballistic missile
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Answer: (c) Advanced light helicopter

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

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

(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Show answer
Answer: (c) A is true but R is false

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.

(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Show answer
Answer: (d) A is false but R is true

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

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

(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
Show answer
Answer: (d) A is false but R is true

Among the following, which one lays eggs and does not produce young ones directly?

(a) Echidna
(b) Kangaroo
(c) Porcupine
(d) Whale
Show answer
Answer: (a) Echidna

Nobel Prize–winning scientist James

D. Watson is known for his work in which area?

(a) Metallurgy
(b) Meteorology
(c) Environmental protection
(d) Genetics
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Answer: (d) Genetics