Here, 𝑛 𝐻𝐵 denotes the number of hydrogen bonds between two specific constituents, such as water-water, water-urea, water-choline and 𝑛 𝐻 2 𝑂 is the number of water molecules in that particular pair. Simultaneously 𝜒 𝐻𝐵 (Water-Urea) increases five folds in W-UC (8:4) compared to W-UC (2:1) and dominantly water-urea hydrogen bonds govern the hydrogen bond network in the system. 𝜒 𝐻𝐵 (Water-Water) and 𝜒 𝐻𝐵 (Water-Urea) shows comparable values in W-UC (6:3) system, and then 𝜒 𝐻𝐵 (Water-Urea)