Questions

There is no difference except for the fact that the first one gives a hint that the function fun() is probably in another source file.

Himachal Pradesh state became 1st to launch a pan-India single emergency no. 112 where all kinds of immediate help can be sought in urgent matters.

Under this project, an Emergency Response Centre (ERC) has been established in Shimla along with 12 district command centres (DCCs), covering the entire state. The ERC has been integrated with police (100), fire (101), health (108) and women (1090) helpline numbers to provide emergency services through the emergency number '112'.

Hub works on layer 1 i.e, physical layer.

Glycolysis is the metabolic process of converting 1 molecule of glucose to 2 molecules of pyruvate through a series of 10 enzyme catalyzed reactions.

The supply curve slopes upward because for reflecting the higher price needed to cover the higher marginal cost of production. 

The Bharat Ratna is the highest civilian award of the Republic of India. Instituted in 1954, the award is conferred "in recognition of exceptional service/performance of the highest order", without distinction of race, occupation, position, or sex.