Which sociologist coined the term Sanskritisation ? Differentiate between Sanskritisation and de-Sanskritisation.
The term Sanskritisation was coined by the sociologist, M.N. Srinivas.
Sanskritisation: Sanskritisation refers to a process whereby members of an usually middle or lower caste attempt to raise their own social status by adopting the ritual, domestic and social practices of a caste of higher status.
De-Sanskritisation: De-Sanskritisation refers to the situation when people from usually middle or lower castes, are seen to distance themselves from the practices of higher castes, and start adopting more localized cultural or religious practices.

Study the chemical structure of an addictive drug shown below and answer the questions that follow.
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 \(P,O,Q\).