question_answer

Following are the steps of purification of water.

(i) Water collected from the river is made free of large pieces of dirt and pumped into reservoirs.

(ii) Water is passed through filter beds.

(iii) Water is stirred in a flocculation tank.

(iv) Water is allowed to stand in large tanks.

(v) Water is chlorinated.

(vi) Filtered water is stored.

(vii) Water is supplied to homes and factories by huge water mains.

Select the option which arrange the steps in correct sequence.

A) (i)\[\to \](iii)\[\to \](iv)\[\to \](ii)\[\to \](v)\[\to \](vi)\[\to \](vii)

B) (i)\[\to \](iv)\[\to \](ii)\[\to \](iii)\[\to \](vi)\[\to \](v)\[\to \](vii)

C) (i)\[\to \](iv)\[\to \](iii)\[\to \](ii)\[\to \](v)\[\to \](vi)\[\to \](vii)

D) (i)\[\to \](ii)\[\to \](iv)\[\to \](v)\[\to \](iii)\[\to \](vi)\[\to \](vii)