Question

Which of the following are exothermic reactions?
3
(i) CaO + H2O + Ca(OH)2
(ii) 2Pb(NO3)2 - Heat → 2PbO + 4NO2 + O2
füi) Cacoz Heat → CaO + CO2
(iv) CH4 + 202 → CO2 + 2H2O
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Answer 1

Answer:

1

Explanation:

bhai jb calcium oxide ko paani m milate hn to heat evolve hoti h isliye y exothermic reaction h