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Sahil Bhai Kaur
Asked: 2022-11-07T11:56:16+05:30 In:

`{:(,”Column A”,,,”Column B”),(A.,”Hard water”,”( )”,a.,”Reverse osmosis”),(B.,”Soft water”,”( )”,b.,”Rain water”),(C.,”Desalinated water”,”( )”,c.,”Presence of “Ca^(+2)andMg^(2+)),(D.,”Lake water”,”( )”,d.,”Scum formation”),(,,”( )”,e.,”Lather formation”):}`

`{:(,”Column A”,,,”Column B”),(A.,”Hard water”,”( )”,a.,”Reverse osmosis”),(B.,”Soft water”,”( )”,b.,”Rain water”),(C.,”Desalinated water”,”( )”,c.,”Presence of “Ca^(+2)andMg^(2+)),(D.,”Lake water”,”( )”,d.,”Scum formation”),(,,”( )”,e.,”Lather formation”):}`
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1 Answer

  1. Correct Answer – A `rarr` c, d
    B `rarr` e
    C `rarr` a
    D `rarr` b
    A – c, d Hard water contains `Ca^(+2)` and `Mg^(2+)` ions and form scum with soap.
    B – e Soft water forms lather with soap.
    C – a Reverse osmosis process is used for desalination.
    D – b Rain water is the purest form of natural water stored in lakes.

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