Question

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------heat--------2pbO + 4NO2 + O2
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Answer 1

Explanation:

a)MgCO3→ MgO + CO2b)2Na + 2H2O→ 2NaOH + H2c)2H2+ O2→ 2H2Od)

Answer 2

Answer:

Here is your answer

● Correct answer is option 'B'.

Explanation:

B) 2Na + 2H2O-------------》2NaOH + H2