Softening of hard water is done by
A. Aeration
B. Boiling
C. Lime soda
D. Ozonation
E. Ion exchange
Choose the correct answer from the options given below:कठोर जल का मृदुकरण किसके द्वारा किया जाता है?
A. वातन (Aeration)
B. उबालना
C. चूना-सोडा (Lime soda)
D. ओज़ोनीकरण
E. आयन विनिमय (Ion exchange)
नीचे दिए गए विकल्पों में से सही उत्तर चुनिए:
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Correct answer: B. B, C and E Onlyकेवल B, C और E
Explanation
Boiling removes temporary hardness, and the lime-soda process and ion exchange remove calcium and magnesium ions. Aeration and ozonation are used for removing gases/odour and for disinfection, not softening. Hence B, C and E Only.उबालने से अस्थायी कठोरता दूर होती है, तथा चूना-सोडा विधि और आयन विनिमय कैल्शियम व मैग्नीशियम आयनों को हटाते हैं। वातन और ओज़ोनीकरण गैस/गंध हटाने और विसंक्रमण के लिए हैं, मृदुकरण के लिए नहीं। अतः केवल B, C और E।More People, Development and Environment questions
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