Get Answers to all your Questions

header-bg qa

Which of the following method is used for removing temporary hardness?

Option: 1

Treatment with washing soda

Option: 2

Ion-exchange method

Option: 3

Calgon's method

Option: 4

Clark's method

Answers (1)


In Clark's method, the calculated amount of lime is added to hard water. It precipitates out calcium carbonate and magnesium hydroxide which can be filtered off.

\mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}+\mathrm{Ca}(\mathrm{OH})_{2} \rightarrow 2 \mathrm{CaCO}_{3} \downarrow+2 \mathrm{H}_{2} \mathrm{O}

Therefore, Option(4) is correct.

Posted by

Anam Khan

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE