Questions

A permanent magnet can affect both magnets and electromagnets.

A permanent magnet has natural magnetic properties while a temporal magnet is created by artificial means. Permanent magnets do not lose their magnetic ability.

A constellation is a group of stars that forms an imaginary outline or pattern on the celestial sphere, typically representing an animal, mythological person or creature, a god, or an inanimate object. Stars may or may not be equidistant from the earth.

The tone for that 1955 conference on Afro-Asian solidarity was actually set by then Indian Prime Minister Jawaharlal Nehru almost a decade earlier.

The first large-scale Asian–African or Afro–Asian Conference—also known as the Bandung Conference was a meeting of Asian and African states, most of which were newly independent, which took place on 18-24 April 1955 in Bandung, Indonesia.

In the given options, BIS is the odd one from the other three.  NABARD, RBI & IRDA are the bodies related to financial sector of India. The financial sector consists of banks, investment funds, insurance companies and real estate firms. 

BIS stands for Beareau of Indian Standards is a National standard body of India with the activities of standardization, marking and quality certification of goods.

The current Chairman of Indian Space Research Organisation(ISRO) is Kailasavadivoo Sivan.

When exposed to certain frequencies of radiation, such as radio waves, the subatomic particles called electrons that orbit an atom's nucleus will "jump" back and forth between energy states. Clocks based on this jumping within atoms can therefore provide an extremely precise way to count seconds.It is no surprise then that the international standard for the length of one second is based on atoms. Since 1967, the official definition of a second is 9,192,631,770 cycles of the radiation that gets an atom of the element called caesium to vibrate between two energy states.