Questions

In making jewels, gold is usually mixed with copper to make it little hard.

In the atom bomb, isotopes of uranium are  disintegrated with the release of a large amount of energy. Hence, the process is nuclear fission.

Electricity generated from coal and oil is termed as 'Thermal Power'.

Newton's III law involved

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.

Honshu is the largest of the four main islands and is approximately equal in area to United Kingdom. Tokyo is one of the five largest cities of the world.