Analyst Questions

A Bowling ball.

The disease that has been eradicated from the world is small pox. Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor. The last naturally occurring case was diagnosed in October 1977 and the World Health Organization (WHO) certified the global eradication of the disease in 1980.

Emisat defence satellite would be launched by ISRO for DRDO in March 2019.

Rust is formed from iron and oxygen.

Noida city of India has recently been chosen by the UN for the Global Continuing City-2025 Program.

Atoms of the same element can have same atomic number and number of electrons since, the atomic number is the number of protons and the number of protons and eectrons are the same in an element.

Hence, the atoms of the same element may differ in their atomic mass since it depends on the number of neutrons it holds and such atoms are called isotopes.

The thinnest layer is crust. It is about 100km. Where as mantle ranges upto 2900 km and the inner most core ranges upto 6300km.