Urea and phosphoric acid undergo H-bonding in the following manner :

$x_1,x_2$ are H-bond length

$y_1,y_2$ are covalent bond length Select the only incorrect option :

The order of the bond angle is, ${\theta }_1<{\theta }_2$

In general, the C=O. bond length reduces as the OO hydrogen-bond length grows as the C-O(H) bond length increases. For larger O O distances, these changes become less noticeable. As the O O separation increases, the angles O=C-O(H) and C-C-O(H) get smaller, whilst the C-C=O increases.