💥Join UPSC 2027,2028 Mentorship (July Batch) + XFactor Notes & Microthemes PDF
Talk to Mentor

Civilsdaily

Login

Exam Year: 1994

  • In recent years, there has been some concern over the threat posed by the Mathura Oil Refinery and the thermal power plants to the Taj Mahal in Agra. The scientific basis of any possible damage to the Taj is mainly

    (a)

    stratospheric ozone and the chlorofluorocarbons which destroy it

    (b)

    acid precipitation and tropospheric ozone

    (c)

    increasing levels of atmospheric CO2 which produce the greenhouse effect

    (d)

    ultraviolet radiation (240-260 nanometers wavelength) and the fumes from the heavily polluted Yamuna river

    Correct Answer:

  • Water is a good solvent of ionic salts because

    (a)

    it has a high boiling point

    (b)

    it has a high dipole moment

    (c)

    it has a high specific heat

    (d)

    it has no colour

    Correct Answer:

  • Which radioactive pollutant has recently drawn the attention of the public, due to its occurrence in the building material ?

    (a)

    Plutonium

    (b)

    Thorium

    (c)

    Radon

    (d)

    Radium

    Correct Answer:

  • Monazite is an ore of

    (a)

    zirconium

    (b)

    thorium

    (c)

    titanium

    (d)

    iron

    Correct Answer:

  • Galvanised iron sheets are protected from rusting due to the presence of a layer of

    (a)

    lead

    (b)

    chromium

    (c)

    zinc

    (d)

    tin

    Correct Answer:

  • Which one of the following is in the correct sequential order in which these appeared under simulated primitive earth condition ?

    (a)

    Methane, Hydrogen cyanide, nitriles, aminoacids

    (b)

    Hydrogen cyanide, methane, nitriles, aminoacids

    (c)

    Aminoacids, nitriles. Hydrogen cyanide, methane

    (d)

    Nitriles, aminoacids, methane, Hydrogen cyanide

    Correct Answer:

  • The basic reason for the extraordinary sparkle of a suitably cut diamond is that

    (a)

    it has a very high transparency

    (b)

    it has a very high refractive index

    (c)

    it is very hard

    (d)

    it has well-defined cleavage planes

    Correct Answer:

  • The main constituents of pearl are

    (a)

    calcium carbonate and magnesium carbonate

    (b)

    aragonite and conchiolin

    (c)

    ammonium sulphate and sodium carbonate

    (d)

    calcium oxide and ammonium chloride

    Correct Answer:

  • Which of the following fish are bred exclusively in the cold regions of India ? I. Catla. II. Tinca. III. Bhekti. IV. Trout. Choose the correct answer from the codes given below.

    (a)

    I and lV

    (b)

    I and IV

    (c)

    II and IV

    (d)

    III and IV

    Correct Answer:

  • Phenylketonuria is an example of an in born error of metabolism. This “error” refers to

    (a)

    hormonal overproduction

    (b)

    atrophy of endocrine glands

    (c)

    inherited lack of an enzyme

    (d)

    non-disjunction

    Correct Answer: