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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2007
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Consider the following reactions : <br> (a)H+(aq)+OH(aq)=H2O(l),ΔH=X1kJmol1 <br> (b)H2(g)+12O2(g)=H2O(l),ΔH=X2kJmol1 <br> (c)CO2(g)+H2(g)=CO(g)+H2O(l)X3kJmol1 <br> (d)C2H2(g)+52O2(g)=2CO2(g)+H2O(l)+X4kJmol1 <br> Enthalpy of formation of H2O(l) is:


( A ) X4kJmol1
( B ) +X1kJmol1
( C ) +X3kJmol1
( D ) X2kJmol1
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