CHEMISTRY ONE LINER SET 43

CHEMISTRY ONE LINER SET 43

1. Brass is made of Copper and Zinc
 
2. Maximum permissible concentration of copper in drinking water in mg/L is – 2.0
 
3. Brass gets discoloured in air due to the presence of which gas in air? Hydrogen sulphide (H2S)
 
4. Which type of Glass is used for making glass reinforced plastic? Fiber glass
 
5. Purification of copper is done by – Electrolytic decomposition
 
6. Non-Metal found in Liquid state is – Bromine
 
7. The phenomenon of ejection of electrons from the metal surface when a light 
of suitable frequency falls on it is called– Photoelectric effect
 
8. Acute Lead poisoning is also known as – Plumbism
 
9. Which of the following metal has least melting point? Mercury
 
10. Which of the following metal forms amalgam with other metals? Mercury