Questions

Pulmonary abscess is a type of liquefactive necrosis of the lung tissue. 

Hence, Localized area of pus formation in the lungs is Pulmonary abscess.

The first session of Indian National Congress was held from 28–31 December 1885, in Mumbai and was attended by 72 delegates. Womesh Chandra Bonnerjee was the first president of the Indian National Congress (INC), a voice of Indian opinion to the British government.

RADAR - RAdio Detection And Ranging.

A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. 

Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.

Radio waves from the transmitter reflect off the object and return to the receiver, giving information about the object's location and speed.

Kandla is Tidal port, Kolkata Haldia is  a  riverine  port,  Tuticorin  is  a river  port,  Marmagao  is  in  Goa,  is situated   on   estuary   on   eastern coast of India. Delta formation and estuary    formation    take    place mostly  on  western  coast  and  Goa is in western coast. 

The government on 28th December, 2016 appointed Viral Acharya as the Deputy Governor of the RBI. He will be joining the ranks of NS Vishwanathan, SS Mundra, R Gandhi as one of four Deputy Governors under RBI Governor Urjit Patel. Acharya has been serving as a Professor of Economics at the New York University Stern School of Business since 2008.

As there is no atmosphere surrounding the moon, the second from any band that is played there cannot travel outwards there is no material medium surrounding if for its propagation.

Electronegativity is the tendency for an atom to attract electrons. There are general trends on the periodic table which you can use to determine the relative electronegativity for different elements, but otherwise you can also look at their valence shell and effective nuclear charge to determine their relative electronegativity.

Here from the given options, Lithium has least tendency to attract electrons and thus has a lower electronegativity.