CHEMISTRY ONE LINER SET 26

CHEMISTRY ONE LINER SET 26

1. Aluminium surface are often ‘anodized’. This means deposition of a layer of
which oxide?
Zinc oxide
 
2. Which Scale is used for recording weather condition? Barometer
 
3. Which chemically inactive gas present in atmosphere? Argon
 
4. Which synthetic fibre is known as artificial silk? Rayon
 
5. All acids contain which element? Hydrogen
 
6. Which predominantly acts as the agent of chemical erosion of soil? Underground water
 
7. Formation of pot holes in river beds is an example of thing? Corrosion
 
8. Which type of glass can cut off ultraviolet rays? Crooked glass 

9. Which is called philosopher’s wool? Zinc oxide
 
10. When ore is heated generally in absence of air then what is process called? Calcination