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TEST SERIES FOR PRE 2016- SCIENCE & TECHNOLOGY-2

TEST SERIES FOR PRE 2016- SCIENCE & TECHNOLOGY-2

Q.1. Phosphorescence is different from fluorescence in all, except,

  1. Phosphorescence involves light emitting pigments Luciferin while in fluorescence absorption of light and then emission take place.
  2. Phosphorescent material immediately remits the absorbed radiation while fluorescent materials re-emit after sometimes.
  3. Both a & b
  4. None of the above

Q.2. Which of the following pairs are incorrectly matched?

  1. Huntington’s disease- Autosomal dominant
  2. Sickle Cell anemia- Autosomal recessive
  3. Klinefelter’s Syndrome- X-linked dominant
  4. Colour blindness- X- linked recessive
  1. Only 1
  2. Only 2
  3. 3 & 4
  4. None of the above

Q.3. Which of the following facts about bio-diesel are correct?

  1. Bio-diesel has smaller energy density than that of gasoline
  2. It is safe to handle as it is biodegradable
  3. Both a & b
  4. None of the above

Q.4.   Malaria is prevalent in Tropical & Sub-Tropical belt because

  1. It provides habitats ideal for Plasmodium.
  2. It provides habitats ideal for mosquito larva.
  3. It provides conditions ideal for B-Blood group people.
  4. None of the above.

Q.5. Natural rubber differs from synthetic rubber in all except

  1. Natural rubber is obtained from tree latex where as synthetic rubber is obtained from petroleum.
  2. Natural rubber is a polymer made from isoprene units while synthetic rubber is a polymer made from different monomers.
  3. Both a & b
  4. None of the above
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