
(i) The oxidation of the hydroboration product with hydrogen peroxide (H2O2) and hydroxide (OH−) leads to the formation of a diol. The main product will be (CH3–CH2–CH2–CH2OH), 1-propanol.
(ii) Phenol (C6H5OH) reacts with aqueous NaOH to form phenoxide ion (C6H5O−). When phenol reacts with CO2 in the presence of H+, it undergoes carboxylation to form salicylic acid (2-hydroxybenzoic acid).
Main product: Salicylic acid (C6H4(OH)COOH)





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 \(P,O,Q\).