
When acetic acid is treated with phosphorus pentoxide (\(P_4O_{10}\)), a dehydrating agent, it forms acetic anhydride:
\[ 2{CH3COOH} \xrightarrow{P_4O_{10}} ({CH3CO})_2{O} \]
Phenyl chloride (\({C6H5CCl}\)) reacts with dimethyl cadmium (\(({CH3})_2{Cd}\)) to form a methylated aromatic compound. This typically results in the formation of acetophenone (\({C6H5COCH3}\)) or a related methylated derivative, depending on the conditions.
On strong heating, a benzoyl compound or related acid derivative can undergo conversion to an amide. The resulting product is benzamide:
\[ {C6H5CONH2} \]





Consider the following reaction of benzene. the percentage of oxygen is _______ %. (Nearest integer) 
A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following: 
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).