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तनु NaOH तथा एलुनियम के टुकड़ों के मिश्रण का उपयोग अपवाहिका (drains ) खोलने के लिए किया जाता है। कारण बताइए ।

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तनु NaOH तथा एलुनियम के टुकड़ों के मिश्रण का उपयोग अपवाहिका (drains ) खोलने के लिए किया जाता है। कारण बताइए ।
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हाइड्रोजन गैस मुक्त होती है तथा यह नालियों को खोलने के काम आती है। यह अभिक्रिया ऊष्माक्षेपी है।
`2Al+2NaOH+2H_(2)O to 2NaAlO_(2)+3H_(2)`
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