mention different methods for removal of permanent hardness of water. explain any two
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Answer:
A few methods to remove hardness from water are, Chemical Process of Boiling Hard Water. Adding Slaked Lime (Clark's Process) Adding Washing Soda.
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The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of an object's speed and direction of motion (e.g. 60 km/h to the north).
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