Science, asked by rachit5641, 5 hours ago

1. Which of the following is a displacement reaction?
(a) MgCO3 MgO + CO2
(b) 2Na + 2H2O → 2NaOH + H2
(c) 2H2 + O2
2H2O
(d) 2Pb (NO3)2
→ 2PbO + 4NO2 + O2

Answers

Answered by Sanjeevt4501

3

Answer:

2nd is the correct answer ok dude

Explanation:

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