Free tnpsc model questions Online Test - MeritNotes

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1. Which of the following is not a chemical reaction?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
2. Which of the following gases is lighter than air?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
3. Pila globosa is used as biofilter in cleaning pollution of water by
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
4. Which one among the following not a greenhouse gas?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
5. Galena is an ore of the metal
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
6. The most abundant metal in the earth’s crust is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
7. Which of the following is a bleaching agent?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
8. The metal used in storage batteries is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
9. Minerals are deposited and accumulated in
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
10. A powerful eye irritant present in smog is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
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