4. Lying between the states of pennsylvania and Maryland, which imaginary line divided the 'Slave States' from the 'Free States' in pre-Civil war America?
6. N.R. Narayana Murthy was recently presented with the 2014 'Global India Award' in Canada. He is the executive chairman of which of the following companies?
7. Indian Oil Corporation, the nation's largest fuel retailer, has started selling the convenient 5-kg cooking gas(LPG) cylinder at kirana stores and supermarkets. The sale of these cylinders has not been launched in which of the following cities?