Questions

True. Hormones are chemicals secreted and regulated by the endocrine system.

Water containing caustic soda cannot be used for drinking

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.

Mihirakula, also Mahiragula, was one of the most important rulers of the Alchon Huns, who led a conquest and gained temporary control of Gandhara, Kashmir, northern and central India. Mihirakula was a son of Toramana, both of Huna heritage, and ruled the Indian part of the Hephthalite Empire.

Upari refers to a category of tenancy tenure held under the Maratha Regime.The Government used to assign land to various cultivators for cultivation and getting maximum revenue. The land allotted to original settlers of villages came to be known as Mirasi land whereas the land assigned to the migrant settlers was known as the Upari land.

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

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