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Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Ion exchange column for removal of hardness of water

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What is meant by hard water??

a: Water containing Ca2+ and Mg2+ ions Explanation

Explanation

b: Water containing Fe3+ ions Explanation

Explanation

c: Water containing Cl-and Br- ions Explanation

Explanation

d: Water containing PO43- and SO4^2- ions Explanation

Explanation

The resin used for ion exchange should contains

a: Non-exchangeable ions Explanation

Explanation

b: Larger ions than those in hard water Explanation

Explanation

c: ions that diffuse faster than in those in water Explanation

Explanation

d: Exchangeable ions Explanation

Explanation

The ion exchange column contains a microporous exchange resin usually made of ?

a: Sulfonated graphitic carbon nitride Explanation

Explanation

b: Sulfonated polystyrene beads Explanation

Explanation

c: Carbonylated polyvinyl chloride Explanation

Explanation

d: Hydroxylated borophene Explanation

Explanation

Soap is not effective for cleaning when the water

a: contains alcohol Explanation

Explanation

b: contains bacteria Explanation

Explanation

c: is hard Explanation

Explanation

d: has high chloride content Explanation

Explanation

What is the necessary property of the resin used to remove the hardness of water

a: It should be a cation exchange resin Explanation

Explanation

b: It should be an anion exchange resin Explanation

Explanation

c: It should not contain polystyrene Explanation

Explanation

d: It should be colourless Explanation

Explanation

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