give one example of a chemical reaction characterised by the evolution of gas
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1) CaO+H2O=>Ca (OH)^2+H2 (gas evolved)
2) Zn+H2SO4=>ZnSO4+H2 (gas evolved)
3) Zn+HCl=>ZnCl2+H2 (gas evolved)
4) CH4+02=>H2O+CO2(gas evolved)
5) Na+H2SO4=>NaSO4+H2 (gas evolved)
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2) Zn+H2SO4=>ZnSO4+H2 (gas evolved)
3) Zn+HCl=>ZnCl2+H2 (gas evolved)
4) CH4+02=>H2O+CO2(gas evolved)
5) Na+H2SO4=>NaSO4+H2 (gas evolved)
HOPE THIS ANSWER HELPS PLS MARK IT AS THE BRAINLIEST ANSWER THANK YOU
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