Rajendra Prasad was elected as the permanent chairman of the Constituent Assembly of Independent India.

The supercomputer 'PARAM' was developed by C-DAC (Centre for Development of Advanced Computing), so the correct answer is:

(D) C-DAC

This colorless liquid has a characteristic sweet smell (similar to pear drops) and is used in glues, nail polish removers, and in the decaffeination process of tea and coffee. Ethyl acetate is the ester of ethanol and acetic acid; it is manufactured on a large scale for use as a solvent.

Beighton Cup is associated with (B) Hockey.

The Beighton Cup is one of the oldest field hockey tournaments in India. It is named after Sir Thomas Beighton, a former president of the Indian Hockey Federation. The tournament has a rich history and has been a significant event in the Indian field hockey calendar, attracting teams from various regions to compete for the prestigious cup. As such, Beighton Cup is closely associated with the sport of field hockey.