Questions

In chemistry, the term transition metal has three possible meanings: The IUPAC definition defines a transition metal as "an element whose atom has a partially filled d sub-shell, or which can give rise to cations with an incomplete d sub-shell".

Any of the set of metallic elements occupying a central block (Groups IVB–VIII, IB, and IIB, or 4–12) in the periodic table, e.g. iron, manganese, chromium, and copper. Chemically they show variable valency and a strong tendency to form coordination compounds, and many of their compounds are coloured.

Here in the given options, only iron (Fe) is a transition metal since Strontium is an alkaline earth, arsenic is a metalloid, hydrogen is (normally) a diatomic gas.

A rift valley is an elongated trough like feature bounded by faults. The term 'garben' is considered synonymous to rift valley.

Daemon is a program that runs in the background without user’s interaction. A daemon runs in a multitasking operating system like UNIX. A daemon is initiated and controlled by special programs known as ‘processes’.

In economic terms, inflation is the rise in the prices of goods and services in the given economy over a period of time. As the prices rise, each unit of the country's currency will buy fewer goods and services.

when the purchasing power of a currency go down then more money comes to the market it is called inflation.

If air contained all oxygen and no nitrogen, everything would have burnt off

National Institute of Aeronautical Engineering is located at Dehradun, Uttaranchal, India.