Free gk questions Online Test - MeritNotes

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1. Which of the following ores does not contain iron?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
2. Sulphur dioxide is a/an
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
3. The percentage of carbon in mild steel is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
4. When iron is rusted, it is
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
5. The chemical used as a ‘fixer’ in photography is:
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
6. Which of the following gives effervescence with sodium bicarbonate?
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
7. Formaldehyde reacts with ammonia and gives
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
8. Heavy water is so called because it
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
9. Washing soda is the common name of
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
10. The substance which decreases the rate of a chemical reaction is called
 
  • (a) 
  • (b) 
  • (c) 
  • (d) 
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