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1. Phosgene is obtained by the reaction of carbon monoxide and
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
2. Hydrogen has ___ isotopes.
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
3. The multi-lingual Natural Disaster Information System (NDIS) has been developed by
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
4. The halogen, which is a dangerous reactive pale yellow gas is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
5. An example of exothermic reaction is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
6. Which place in India is called “The Golden Mine of Liverworts”?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
7. Sickle-cell anemia is a disease caused due to the abnormality in
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
8. Covalent compounds are insoluble in
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
9. Which one of the following metal is the heaviest?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
10. Chlorine is mixed in water so that
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
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