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Assertion. Calgon is used for removing C...

Assertion. Calgon is used for removing `Ca^(2+) and Mg^(2+)` ions.
Reason. Calgon forms precipate with `Ca^(2+) and Mg^(2+)` ions.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
D
Both assertion (A) and reason (R) are not true.
Correct Assertion : Calgon mask the properties of `Ca^(2+) and Mg^(2+)` ions present in water without removing them as ppt.
Correct Reason : Calgon forms soluble complexes with `Ca^(2+) and Mg^(2+)` in which properties of these ions are masked.
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Knowledge Check

  • Assertion (A) Calgon is used for removing CA^(2+) and Mg^(2+) ions from hard water. Reason (R ) Calgon forms precipitates with Ca^(2+) and Mg^(2+)

    A
    Both A and R are true and R is the correct explanation of A
    B
    Both A and R are true but R is not a correct explanation of A
    C
    A is true but R is fales
    D
    Both A and R are fales.

  • Na^(+),F^(-) and Mg^(+2) ions have the same

    A
    size
    B
    electronic configuration
    C
    ionisation energy
    D
    nuclear charge

  • Mg^(2+) ion is isoelectronic with

    A
    `Na^+`
    B
    `Ca^(2+)`
    C
    `Ar`
    D
    None of these