Double pot is a method of:
Correct Answer: Chlorination
Description: It is desirable to ensure a constant dosage of chlorine to well water.
The double pot method is an improvement devised by the National Environmental Engineering Research Institute, Nagpur, India.
This method uses two cylindrical pots, one placed inside the other. The inside height and diameter are 30 cm and 25 cm respectively, for the outer pot. A hole 1 cm in diameter is made in each pot; in the inner pot the hole is in the upper portion, near the rim and in the outer pot it is 4 cm above the bottom.
A mixture of 1 kg of bleaching powder and 2 kg of coarse sand (approx. 2 mm in diameter) is prepared and slightly moistened with water.
The inner pot is filled with this mixture up to 3 cm below the level of the hole.
The inner pot is introduced into the outer one, and the mouth of the latter closed with polyethylene foil. The use of two pots makes it possible to have larger holes without the risk of over chlorination.
Category:
Dental
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now