Free tnpsc model questions Online Test - MeritNotes

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1. Itching due to insect bite is caused by
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
2. In which one of the following situations a chemical reaction does not occur?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
3. The catalyst used in the hydrogenation process of the oils is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
4. Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
5. In which of the following form alum is used?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
6. Optical fibers are mainly used in
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
7. Which one among the following is the most unreactive gas?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
8. The most commonly used chemicals in the artificial rain making or cloud seeding are
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
9. Which of the following acid is utilized in the photography?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
10. The essential element in all organic compounds is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
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