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1. The metal compound commonly found in Sindhoor or Kumkum is based on
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
2. Which of the following is used as a dehydrating agent?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
3. The percentage of oxygen present in human body is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
4. Which among the following is a metalloid?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
5. Organic chemistry deals with
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
6. Isotopes of a given element contain
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
7. Which one of the following is produced during the formation of photochemical smog?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
8. Which of the following shows electrical conduction?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
9. A mixture of water and alcohol can be separated by
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
10. Air is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
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