Questions

Nuclear sizes are expressed in a unit called "Fermi" which is a unit of length equal to 10⁻¹⁵ metre (one femtometre), used in nuclear physics. It is similar to the diameter of a proton.

The point or place of origin of an earthquake is called Focus. 

And,

The point where the seismic waves reach the surface is called as Epicenter.

In the given puzzle, the logic followed is

First digits comes from the number of letters in the word

Second digit is its serial number

Third digit is the addition of first and second digits

=> SUNDAY = 6713

Holkar Trophy is associated with Bridge sport.

Bridge is the ultimate tricky card game that four people can play with a pack of 52 cards. It is the greatest source of enjoyment.

History of the Holkar Trophy ::

It was a treasured dream of Late Maharaja Yeshwant Rao Holkar to have regular National Bridge Tournament at Indore for promotion of the game in the erstwhile Holkar state.

More :: Indian History Questions

In India, Islamic rulers Qutb-ud-din Aibak imposed jizya on non-Muslims first time which was called kharaj-o-jizya. Jizya was abolished by the Mughal ruler Akbar in the 16th century but was re-introduced by Aurangzeb in the 17th century.

Stars are what that come out at night without being called and are lost in the day without being stolen.