What is the melting point of pure urea and pure cinnamic acid and compare with literature melting point?
a. Urea133-135°C, Cinnamic acid133-134°C
b. Urea133-135°C, Cinnamic acid133-135°C
c. Urea133-134°C, Cinnamic acid133-135°C
d. Urea133-134°C, Cinnamic acid133-134°C