GK Chemistry

General Knowledge – Chemistry

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1. Biogas mainly contains

 
 
 
 

2. The most abundant element in the earth’s crust is

 
 
 
 

3. Hydrogen is used instead of Helium to fill balloons for meteorology because

 
 
 
 

4. The tip of the match-stick contains

 
 
 
 

5. Stainless steel is an example of

 
 
 
 

6. Polythene is industrially prepared by the polymerization of –

 
 
 
 

7. Why does diamond shine at night?

 
 
 
 

8. A light sensitive compound used in photography is

 
 
 
 

9. Which of the following types of clothes is manufactured by using petroleum products?

 
 
 
 

10. Which of the following elements is not present in stainless steel?

 
 
 
 

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