A bob of mass \(m\) is suspended at a point \(O\) by a light string of length \(l\) and left to perform vertical motion (circular) as shown in the figure. Initially, by applying horizontal velocity \(v_0\) at the point ‘A’, the string becomes slack when the bob reaches at the point ‘D’. The ratio of the kinetic energy of the bob at the points B and C is: 
Match sequencing methods with key feature. 
Match the technique with its application. 
Match the RNA type with its function. 
Match the enzyme with its function. 
Match the hypersensitivity type with its example. 