Home
Class 7
CHEMISTRY
Assertion (A): The Clark's method involv...

Assertion (A): The Clark's method involves removal of permanent hardness.
Reason ( R): The Clark's method involves the addition of slaked lime which results in the removal of bicarbonates as insoluble carbonates.

A

Both (A) and (R ) are true and (R ) is the correct reason for (A).

B

Both (A) and (R ) are true but (R ) is not the correct reason for (A)

C

(A) is true but (R ) is false

D

(A) is false but (R ) is true.

Text Solution

Verified by Experts

The correct Answer is:
D
Clark's method is used to remove temporary hardness. In this process slaked lime is added, which results in conversion of soluble bicarbonates into insoluble carbonates. On filtration soft water is obtained.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • Water

    PEARSON IIT JEE FOUNDATION|Exercise Assessment Test 14|1 Videos

  • Water

    PEARSON IIT JEE FOUNDATION|Exercise Assessment Test 15|1 Videos

  • Water

    PEARSON IIT JEE FOUNDATION|Exercise Assessment Test 12|1 Videos

  • MOCK TEST

    PEARSON IIT JEE FOUNDATION|Exercise EXERCISE|25 Videos

Similar Questions

Explore conceptually related problems

Permanent hardness is removed by Clark's method.

Permanent hardness is removed by Clark's method.

Knowledge Check

  • In Clark's method the chemical used to remove hardness of water us

    A
    `Na_2CO_3`
    B
    `Ca(OH)_2`
    C
    NaOH
    D
    `CaCO_3`

  • Which of the following methods is not used to remove permanent hardness of water?

    A
    by mixing sodium carbonate
    B
    by distillation
    C
    by mixing caustic soda
    D
    by boiling

  • Which among the following reactions is involved for the removal of permanent hardness by anion exchanger resin

    A
    `Na_(2)AI_(2) SI_(2) O_(8). xH_(2) O + MG^(2+) to` Product
    B
    `Na_(2) [Na_(4)(PO_(3))_(6)] + Mg^(2+) to` product
    C
    `R = NH_(3)^(+) OH^(-) + SO_(4)^(2-) to` product
    D
    `Na_(2) CO_(3) + Ca^(2_) to` product

    • Similar Questions

    Explore conceptually related problems

    ______ hardness is removed by Clark's method.

    _______ hardness is removed by Clark's method.

    Explain the removal of temporary hardness of water by Clark's method. Give equations.

    Describe Clark's method to remove hardness of water ?

    In comparison to the zeolite process for the removal of permanent hardness, the synthetic resins method is

    Home
    Profile