Questions

The simplest form of matter that has a unique set of properties and is cannot be broken down into simpler substances by chemical means is called an Element.

An Atom is the simplest form of an element.

The simplest form of some elements is a Molecule. When an element consists of two identical atoms it is called a diatomic molecule.

A substance that contains two or more elements chemically combined in a fixed proportion is called a Compound.

A cup.

This region is thus called because of its rich coal field and the iron and steel plants that have come up around them. Rhur valley is a major Industrial hub of West Germany. 

A Treasury Bill (known as T-Bill) is an instrument of money market, used to finance short term requirements of Government of a country. A T-Bill is issued at a rate lower than the Face value, and redeemed at Face value on maturity, this difference is the rate of interest on T-Bill. This rate of interest is called Risk free Rate of the country.

One grandfather, One father and One son makes two fathers and two sons.