If the reaction sequence given below is carried out with 15 moles of acetylene, the amount of the product $\mathbf{D}$ formed (in $\mathrm{g}$ ) is ___________ .

The yields of $\mathbf{A}, \mathbf{B}, \mathbf{C}$ and $\mathbf{D}$ are given in parentheses.

[Given: Atomic mass of $\mathrm{H}=1, \mathrm{C}=12, \mathrm{O}=16, \mathrm{Cl}=35$ ]

For the following reaction scheme, percentage yields are given along the arrow:



x g and y g are mass of R and U, respectively.

(Use : Molar mass (in g mol^$$-$$1) of H, C and O as 1, 12 and 16, respectively)

The value of x is ________.

For the following reaction scheme, percentage yields are given along the arrow:


x g and y g are mass of R and U, respectively.

(Use : Molar mass (in g mol^$$-$$1) of H, C and O as 1, 12 and 16, respectively)

The value of y is ________.

Total number of hydroxyl groups present in a molecule of the major product P is ..............