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1. The IUPAC name of formaldehyde is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
2. Gamma rays are
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
3. Which of the following gases is not known as greenhouse gas?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
4. On heating ammonium acetate is converted into
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
5. Ethanol is prepared industrially by
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
6. In atomic reactors, graphite is used as
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
7. Air is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
8. The chemical substances frequently used in the fluorescent tube are
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
9. The liquid used in making dynamite is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
10. In known elements, the maximum number is of
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
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