RRB Group D previous year question
Which of the following reactions is an example of a reduction reaction?
Asked in RRB Group D CBT-1: 08 Jan 2026 Shift 3 · Science
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Correct answer: (D) CuO + H₂ → Cu + H₂O
CuO + H₂ → Cu + H₂O: copper oxide loses oxygen (is reduced) while hydrogen gains it (is oxidised).
हिंदी में प्रश्न
निम्नलिखित में से कौन-सा, अपचयन अभिक्रिया (reduction reaction) का उदाहरण है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) NaOH + HCl → NaCl + H₂O
सही उत्तर: विकल्प D (NaOH + HCl → NaCl + H₂O)
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