General Awareness Daily Quiz #6

Megasthenes was a ____________ ambassador to the court of Chandragupta Maurya.

Which King made Al-Biruni, the writer of Kitab-ul-Hind, a hostage?

Rameswaram is a city in the state of ______.

Along with Leo Szilard who was the other physicist to hold the first patent for a nuclear reactor?

Consider the following pairs:

Event : Time interval (Seconds)

1] Period of X-rays : 10-8

2] Life time of an excited state of an atom : 10-1

3] Time between successive human heartbeats : 100

4] Rotation period of the earth : 105

Which of the above pairs are correctly matched?