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Tamilnadu TNUSRB SI Selection Old Question Papers - 3


  1. Which of the following rays are used for the detection of counterfeit currency and fogery in documents ?
    1. Alpha rays
    2. Beta rays
    3. Ultra violet rays
    4. Light rays
  2. What is the boiling point of water inside the pressure cooker ?
    1. 100 C
    2. Less than 100 C
    3. 0 C
    4. Greater than 100 C

  3. What is the device used to store charge?
    1. Capacitor
    2. Resistor
    3. Inductor
    4. Conductor

  4. What will happen to the gravitational force of attraction between 2 masses if the distance between them is doubled ?
    1. Is reduced to half
    2. Is doubled
    3. Becomes 4 times
    4. Is reduced to quarter

  5. Laughing Gas is
    1. Nitric oxide
    2. Nitrogen di oxide
    3. Nitrogen tri oxide
    4. Nitrous oxide

  6. Chlorophyll contains the metal
    1. Iron
    2. Magnesium
    3. Calcium
    4. Chromium

  7. D.D.T. is an/a
    1. Germicide
    2. Antiseptic
    3. Insecticide
    4. Anaesthetic

  8. Which one of the following acid reduces Tollen’s reagent ?
    1. Acetic acid
    2. Benzoic acid
    3. Oxalic acid
    4. Formic acid

  9. The blue colour of the sky is due to
    1. Reflection of ligh
    2. Refraction of light
    3. Scattering of light
    4. Partial reflection of light

  10. Among the silver compounds, the compound used in artificial rain is
    1. AgF
    2. Agl
    3. Agd
    4. AgBr

  11. Richmond lang effect is produced by
    1. Cytokinin
    2. Auxins
    3. Gibberellins
    4. Ethylene

  12. The principle used in pickling is
    1. Imbibition
    2. Plasmolysis
    3. Endosmosis
    4. None of the above

  13. ‘B’ chromosomes are found in
    1. Man
    2. Rat
    3. Maize
    4. Bean

  14. The 17 human chromosome is
    1. Metacentric
    2. Acrocentric
    3. Sub-metacentric
    4. Telocentric

  15. Single cell protein are
    1. Nostoc
    2. Rhizobium
    3. Chlorella
    4. Mushroom

  16. The primary pigment is
    1. Chlorophyll ‘b’
    2. Carotenoid
    3. Chlorophyll ‘a’
    4. Xanthophyll

  17. In which year the National Malaria Eradication Programme (NMEP) was implemented?
    1. 1955
    2. 1956
    3. 1957
    4. 1958

  18. What is the name of graft between identical twins?
    1. Xeno graft
    2. Allo graft
    3. Iso graft
    4. Auto graft

  19. What is the name of the disease caused due to protein deficiency ?
    1. Beri Beri
    2. Rickets
    3. Kwashiorkar
    4. Anemia

  20. The principal organ of urea Biosynthesis in man is
    1. Spleen
    2. Liver
    3. Skin
    4. Kidney



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