Environment & Ecology · Environmental Engineering
पानी की स्थायी कठोरता (Permanent hardness) को निम्नलिखित में से किस विधि द्वारा दूर किया जा सकता है? (a) लाइम-सोडा प्रक्रिया (b) उबालना (c) विखनिजीकरण प्रक्रिया (Demineralization process) (d) बेस-एक्सचेंज प्रक्रिया
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1केवल (a), (c) और (d)✓
- 2उपरोक्त सभी
- 3केवल (b)
- 4केवल (a)
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केवल (a), (c) और (d)
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