Tamilnadu TNUSRB SI Selection Old Question Papers - 3 - TNPSC Portal - Thervu Vazhikatti Current Affairs Magazine

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
    
    

---