Physics, asked by charnjitsinghdeol62, 9 months ago

1. Which of the following is a displacement
reaction?
(a) MgCO3 → MgO + CO2
(b) 2Na + 2H20 - 2NaOH + H2
(c) 2H2 + O2 → 2H2O
(d) 2Pb (NO3)2
→ 2PbO + 4NO2 + O2

Answers

Answered by savenature73

7

Answer:

a and b and d are the answers.

Answered by nb56183829

11

Answer:

1. 2H2 + O2 ⋋✿ ⁰ o ⁰ ✿⋌ 2H2O

Explanation:

please mark as brainlist

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