Question

1. Explain the use of chlorine in water purification plants.
2. Name a non metal that has high density
3. Carbon is used as lubricant

Answer 1

Answer:

1..Slowly add the chlorine powder to the water and stir until it has all dissolved. Do this out in the open air. Take the bucket of chlorine solution to the water tank and slowly pour it into the tank. If possible add small amounts of the solution to different parts of the tank...

2.iodine has the highest density (among the commonly encountered nonmetallic elements..

3.The carbon atoms are strongly bonded together in sheets. Because the bonds between the sheets are weak, graphite shows lower shearing strength under friction force. Thus it can be used as a solid lubricant and has become one of traditional and primary solid lubrication materials.